Homeostasis And Goldfish Respiration Physical Education Essay

Homeostasis And Goldfish Respiration Physical Education Essay Every organism possesses a mechanism for maintaining homeostasis. Homeostasis is the ability of the body or a cell to seek and maintain a condition of equilibrium or stability within its internal environment when dealing with changes in the external environment. Regulation of temperature is most definitely the most important aspect of homeostasis. Fish are cold-blooded animals. Most fish cannot control their internal body temperatures. Most fish body temperatures change with the temperature of the water around them. In order to obtain temperature homeostasis, the fish seek colder or warmer water. They lose metabolic heat through their gills. There are different types of metabolic adaptations in fish. Temperature and blood pressure are two. Cold-blooded animals must regulate their body temperature by moving. Literary Discussion Homeostasis and the Respiration of Goldfish What is Homeostasis? Homeostasis is the ability of the body or a cell to seek and maintain a condition of equilibrium or stability within its internal environment when dealing with external changes (www.biology-online.org/dictionary/Homeostasis). The main function of homeostasis is to keep all the processes of the body stable even if there are variations in the weather and environment outside (http://www.buzzle.com/articles/what-is-homeostasis.html). Regulation of temperature is most definitely the most important aspect of homeostasis. Warm blooded animals are able to retain a more adjustable constant body temperature. In humans, homeostasis happens when the body regulates body temperature in an effort to maintain an internal temperature around 98.6 degrees Fahrenheit (http://www.biology-online.org/dictionary/Homeostasis). For instance, when it is hot outside your body sweats to cool off, and we shiver to warm up during the cold seasons. Unlike humans, most fish cannot control their internal body temperatures. Fish are cold-blooded creatures. Some fish have mechanisms to keep a healthy temperature. In order to obtain temperature homeostasis, the fish seek colder or warmer water. Certain types of fish such as tuna fish control their body temperature by a specialized heat exchange system of blood vessels. Most fish are poikilothermic which means their body temperature changes with the temperature of the water around them. For instance, if the top of a pond is frozen over, the fish swims to the bottom of the pond to try to stay at a comfortable temperature. All animals create heat from metabolic activity. Metabolic activity includes breaking down food and movement (http://www.ehow.com/facts_7433473_fish-homeostasis-different-water-temperatures.html). Animals such as fish lose metabolic heat through their gills. This happens because the heated blood that runs through vessels in the gills comes into close contact with the colder water outside, and all the heat is lo st. Many diseases are a result of disturbance of homeostasis. This condition is known as homeostatic imbalance. Every organism will lose efficiency in its control systems as it ages. Homeostatic imbalance is responsible for the physical changes associated with aging along with the internal environment. Inefficiencies gradually increase the risk for illness because of the unstable internal environment. It has been seen where alleged negative feedback mechanisms become overwhelmed and destructive positive feedback mechanisms then take over. Negative feedback is mainly how homeostasis is maintained, and positive feedback includes processes like blood clotting (http://www.biology-online.org/biology-forum/about2004.html). In maintaining homeostasis, the kidneys, liver, and brain are the organs in which play an important role. The kidneys are responsible for controlling blood water level, and regulation of salt and ion content in the blood. The liver performs the function of stabilizing carbohydrate metabolism and metabolizing toxic substances (http://www.buzzle.com/articles/what-is-homeostasis.htm.l) Whereas, the brain helps in controlling the autonomic nervous system and the endocrine system. Dehydration, hypertension, diabetes, hypoglycemia, etc are major homeostatic imbalance health problems. Homeostasis is extremely important for proper functioning of all human body systems. Enzymes even need a specific constant temperature to work at their optimum level. At higher temperatures, the enzymes will stop working. Homeostasis occurs to all humans, animals, and plants and is needed for us to stay healthy and alive. There are different types of metabolic adaptations in fish. Temperature and blood pressure are two examples. Body temperature for a fish mainly depends on the temperature of the water that the fish is in. This is the same for a fish in a tank, lake, pond, river, ocean, etc. A fish body adjusts to the temperature where the fish will be comfortable in the water. Cold-blooded animals cannot generate their own body heat; they must regulate their body temperature by moving. Absorptive and post absorptive are two metabolic states. Digestion, strength, respiration, salt and water balance, and heart rate are also included in this category. Glycolysis is an anaerobic metabolic pathway. Homeostasis in fish as well as in humans adjusts when the environment that it is in adjusts. If a fish is swimming in polluted water, the water is going to affect the fish. Its going to affect the fishs vision, the fishs breathing, and many other things. Just like polluted air causes humans to get a disease or any other illness, a fish can get a disease or illness as well. The temperature will affect the pace of the fish similar to the temperature affecting the pace of humans. Homeostasis, in biological terms means that the body is maintaining internal equilibrium to adjust internally and physiologically, in response to the external environmental changes(http://www.buzzle.com/articles/what-is-homeostasis.html). The main function of homeostasis is to keep all the processes of the body stable even if there are variations in the weather and environment outside (http://www.buzzle.com/articles/what-is-homeostasis.html). Regulation of temperature is most definitely the most important aspect of homeostasis. Vocabulary Effectors-are muscles or glands which work in response to the stimulus received from the motor nerves(http://www.tutorvista.com/content/biology/biology-ii/control-and-coordination/receptors-and-effectors.php). Receptors-are structures at the ends of the nerve fibers that collect the information to be conducted by the nerves (http://www.tutorvista.com/content/biology/biology-ii/control-and-coordination/receptors-and-effectors.php). Nares (Nostrils)-the nasal passages (http://dictionary.reference.com/browse/nares). Mouth-the opening in which an animal or human takes in food, liquid, oxygen, etc. (http://dictionary.reference.com/browse/mouth?s=t) Eyes- the organ of sight, in vertebrates typically one of a pair of spherical bodies contained in an orbit of the skull and in humans appearing externally as a dense, white, curved membrane, or sclera, surrounding a circular, colored portion, or iris, that is covered by a clear, curved membrane, or cornea, and in the center of which is an opening, or pupil, through which light passes to the retina.( http://dictionary.reference.com/browse/eyes?s=t) Operculum-the gill cover; a part or organ serving as a lid or cover, as a covering flap on a seed vessel. (http://dictionary.reference.com/browse/operculum?s=t) Lateral Line-the line, or system of lines, of sensory structures along the head and sides of fishes, by which the animal is believed to detect water current and pressure changes and vibrations. (http://dictionary.reference.com/browse/late-ral+line?s=t) Soft Dorsal Fins-the fin or finlike integumentary expansion generally developed on the back of aquatic vertebrates.( http://www.earthlife.net/fish/fins.html) Pectoral Fins-(in fishes) either of a pair of fins usually situated behind the head, one on each side, and corresponding to the forelimbs of higher vertebrates.( http://www.earthlife.net/fish/fins.html) Pelvic Fins-(in fishes) either of a pair of fins on the lower surface of the body, corresponding to the hind limbs of a land vertebrate; ventral fin.( http://www.earthlife.net/fish/fins.html) Gills-the respiratory organ of aquatic animals, as fish, that breathe oxygen dissolved in water.( http://dictionary.reference.com/browse/gills?s=t) Scales-one of the hard, bony or dentinal plates, either flat or denticulate, forming the covering of certain other animals, as fishes.( http://dictionary.reference.com/browse/scales?s=t) Vent-the anal or excretory opening of animals, especially of those below mammals, as birds and reptiles.( http://dictionary.reference.com/browse/vent?o=100074) Peduncle-a stalk or stem; a stalk like part or structure.( http://dictionary.reference.com/browse/peduncle?s=t) Anal Fin- the median, unpaired fin on the ventral margin between the anus and the caudal fin in fishes.( http://dictionary.reference.com/browse/anal+fin?s=t) Two-Chambered Heart-including one atrium and one ventricle.( http://en.wikipedia.org/wiki/Atrium_(heart) Jaws- either of two bones, the mandible or maxilla, forming the framework of the mouth.( http://dictionary.reference.com/browse/jaws?s=ts) Equilibrium-a state of rest or balance due to the equal action of opposing forces. Vertebrates- are animals that have a spine or backbones.( http://dictionary.reference.com/browse/equilibrium?s=t) Cold-blooded- designating or pertaining to animals, as fishes and reptiles, whose blood temperature ranges from the freezing point upward, in accordance with the temperature of the surrounding medium.( http://dictionary.reference.com/browse/cold-blooded?s=t) Ventilation-combination of movement of operculum and the floor of the mouth.( http://www.biology-resources.com/fish-01.html) Question, Hypothesis, Materials, and Procedure Question: Do various temperatures of water effect the way a fish breathe? Hypothesis- Cold water: Cold water will affect the way a fish breathe. A fish will take deeper, slower, and less breathes. Room Temperature Water: The amount of breaths a fish breathes will be normal. Hot water: Hot water will cause the fish to taker deeper breaths that are faster. Fish will inhale and exhale more breathes in hot water. Materials- Two fish Small sized container/fish tank Hot water Cold water Room temperature water Notebook/paper Pen/pencil Thermometer timer Procedure- First, set aside a bowl of water to get it to be room temperature. While that sits, create a table with three rows and eight columns. Label the first row experimental sample. Label the next two rows fish one and fish two. Label the columns room temperature, number of breaths, cold water temperature, breaths, hot water temperature, and breaths. Then, get extremely cold water and pour it into the container/fish bowl. Take the first fish and put it in the container with the cold water. Take the thermometer and put it in the bowl of water; wait till the meter stops moving. Record the temperature of the water. Next, set your timer to sixty seconds. Start the timer and count how many breaths the fish takes until the timer goes off. Record the time. Take the fish and thermometer out of the water and pour the water out. Pour the hot water into the container/fish tank and put the previous fish back into the container. Take the thermometer and sit it in the bowl until the meter stops. Record the temperature. Like before, set the timer to sixty seconds and count how many breaths the fish takes in that time. Record your results. After that, take the fish out along with the thermometer. Empty the container of the water. By this time the water that was set aside should be room temperature. Take that water and empty it into the container/fish tank and put the previous fish and thermometer in the bowl. Record the temperature of the water. Set the timer and count the breaths taken again. Record your results before taking the fish and thermometer out. Pour out the water. Repeat this process with the other fish and new water. Bar Graph and Frequency Table Experimental Sample Room Temperature Number of Breaths Warm Temperature Number of Breaths Cold Temperature Number of Breaths Time Fish #1 22Â ° C 89 27Â ° C 91 25Â ° C 59 60 sec Fish #2 23Â ° C 84 27Â ° C 69 25Â ° C 66 60 sec What is a fish? What is the mechanism in which fish breathe in water? A fish is any cold-blooded vertebrate animal that lives in water (http://www.myuniversalfacts.com/2006/03/how-do-fish-breathe.html). Fish live in nearly any water habitat and can be found in many different varieties of climatic conditions from near-freezing Arctic waters to the hot desert springs. Animals that live on land have a different respiratory system from aquatic animals such as fish. A fish is capable of breathing under water without taking frequent trips to the surface to breathe air unlike a whale which is a marine animal. This is because fish have gills. It is a process to fish breathing. First, water in the fishs surrounding enters its mouth. Water enters the mouth by the operculum and a very effective pumping system that involves the mouth. As a fish pumps water through the gills it opens and closes its mouth. Water is drawn into the mouth after the fish opens its mouth and the operculum closes. After water enters the fishs mouth it passes through a structure. This structure is called gill rakers. The gill rakers act as a filter system by straining out particles such as food or any other foreign particles that may have entered the mouth from the inflow of water. Next, the filtered water travels through the gill arches hence passing over the gills. Projected out into the water flow allows water to flow across the lamellae are gill filaments. Resulting, oxygen and carbon dioxide are exchanged directly across the capillary membrane. As water flows through the gills, the dissolved oxygen passes into blood circulating through the gill structures. The gill structures include the filaments and lamellae. Simultaneously, carbon dioxide which is the waste product, in the fishs bloodstream passes into the water. It is then carried away and out of the body through the operculum. This is the process by which fish breathe also know as respiration. Resources and References http://www.biology-resources.com/fish-01.html http://en.wikipedia.org/wiki/Fish http://www.myuniversalfacts.com/2006/03/how-do-fish-breathe.html http://teachers.guardian.co.uk/Guardian_RootRepository/Saras/ContentPackaging/UploadRepository/learnpremium/Lesson/learnpremium/scienc~00/post16~00/biology/exchan~00/gaseou~01/gaseou~01/breath~00/default.htm http://www.tutorvista.com/content/biology/biology-ii/control-and-coordination/receptors-and-effectors.php http://encyclopedia2.thefreedictionary.com/Two+chambered+heart http://www.dictionary.com http://en.wikipedia.org/wiki/Atrium_(heart http://www.earthlife.net/fish/fins.html

Vancouver Essay -- British Columbia Canada

Location: Vancouver is the largest city in British Columbia and the second largest in the Pacific Northwest region. It is a coastal city and major seaport located in the Lower Mainland of south western British Columbia, Canada. Population: The population of the city of Vancouver is 578,041 and the population of Metro Vancouver is 2,116,581. Vancouver is ethnically diverse, with 52% of city residents and 43% of Metro residents having a first language other than English. With a population of about 600,000 (BC Stats estimate), Vancouver lies in a region of more than 2 million people. Vancouver is the largest city in the province of British Columbia and the third largest in Canada. It covers an area of 114 sq km. History Archaeological evidence shows that coastal Indians had settled the Vancouver area by 500 B.C. British naval captain George Vancouver explored the area in 1792. Vancouver was founded as a sawmill settlement called Granville in the 1870s. The city was incorporated in 1886 and renamed after Captain Vancouver. Vancouver is named after Captain George Vancouver, a British explorer. The name Vancouver itself originates from the Dutch "van Coevorden", Vancouver is also part of the slightly larger Lower Mainland metropolitan area which comprises a total population of 2,285,900. Vancouver was largest urban area. Western Canada was the third largest in the country. denoting somebody from (in Dutch: "van") Coevorden, an old city in The Netherlands. Vancouver was first settled in the 1860s as a result of immigration caused by the Fraser Canyon Gold Rush, particularly from the United States, although many immigrants did not remain after the rush. The city developed rapidly from a small lumber mill ... ...Free Zone. Aviation Located in Richmond, Vancouver International Airport (YVR) is the principal international airport in western Canada and is the second busiest in the nation. As the premier gateway to Asia, it hosts many airlines' regional offices and their flights daily to Asia, Europe, and the United States. Vancouver is the closest air-link to Asia, offering the fastest North American airport with daily flights to the Republic of Korea's Incheon International Airport. Vancouver is also served by the Abbotsford International Airport, fast becoming a reliever to YVR convenient for the eastern suburbs and transborder United States. Operating from Vancouver Harbour Water Aerodrome on the Downtown waterfront, several floatplane operators support both tourist scenic flights and practical transportation, with extensive operations during daylight hours. Vancouver Essay -- British Columbia Canada Location: Vancouver is the largest city in British Columbia and the second largest in the Pacific Northwest region. It is a coastal city and major seaport located in the Lower Mainland of south western British Columbia, Canada. Population: The population of the city of Vancouver is 578,041 and the population of Metro Vancouver is 2,116,581. Vancouver is ethnically diverse, with 52% of city residents and 43% of Metro residents having a first language other than English. With a population of about 600,000 (BC Stats estimate), Vancouver lies in a region of more than 2 million people. Vancouver is the largest city in the province of British Columbia and the third largest in Canada. It covers an area of 114 sq km. History Archaeological evidence shows that coastal Indians had settled the Vancouver area by 500 B.C. British naval captain George Vancouver explored the area in 1792. Vancouver was founded as a sawmill settlement called Granville in the 1870s. The city was incorporated in 1886 and renamed after Captain Vancouver. Vancouver is named after Captain George Vancouver, a British explorer. The name Vancouver itself originates from the Dutch "van Coevorden", Vancouver is also part of the slightly larger Lower Mainland metropolitan area which comprises a total population of 2,285,900. Vancouver was largest urban area. Western Canada was the third largest in the country. denoting somebody from (in Dutch: "van") Coevorden, an old city in The Netherlands. Vancouver was first settled in the 1860s as a result of immigration caused by the Fraser Canyon Gold Rush, particularly from the United States, although many immigrants did not remain after the rush. The city developed rapidly from a small lumber mill ... ...Free Zone. Aviation Located in Richmond, Vancouver International Airport (YVR) is the principal international airport in western Canada and is the second busiest in the nation. As the premier gateway to Asia, it hosts many airlines' regional offices and their flights daily to Asia, Europe, and the United States. Vancouver is the closest air-link to Asia, offering the fastest North American airport with daily flights to the Republic of Korea's Incheon International Airport. Vancouver is also served by the Abbotsford International Airport, fast becoming a reliever to YVR convenient for the eastern suburbs and transborder United States. Operating from Vancouver Harbour Water Aerodrome on the Downtown waterfront, several floatplane operators support both tourist scenic flights and practical transportation, with extensive operations during daylight hours.

Globalization Argumentative Paper Essay

Is globalization good or bad in the business world today? There are good and bad sides to everything now days. It’s just weighing your options out to see what fits better. In the next couple of paragraphs we will go over what is good and what could be bad in globalization in the business world. Globalization Good The good side to globalization is all about the efficiencies and opportunities open markets create. Local producers can sell their products worldwide. This creates more business for them. Globalization has made the flow of money around the world easier. Creating more jobs around the world. (1 Premise) Globalization is great to the markets around the world. They have been able to expand their businesses. Globalization Bad The bad side to globalization is new uncertainty and risks that have risen. It has made the competition between markets intensify. (2 Premise) Companies that we enjoying this globalization are now facing unpredictable demand and business opportunities. With there being so much competition and being under constant pressure of new competitors, leaves the current companies with little to no pricing power. Another bad side of globalization is declining money flows across local and national boundaries. Conclusion Is globalization good or bad? There are many advantages and several disadvantages to globalization. But it is each individual’s personal opinion. (1 Conclusion) Globalization is good and can continue to be good for the world. Everyone is going to look at this issue in a different way. Although globalization is good in many individuals eyes, it is still bad in many others eyes. (2 Conclusion) There are many risks that come with  globalization, and so many uncertainties. This is why this will be an ongoing debate to whether globalization is benefitting us locally and nationally, or if it’s hurting the entire world. References 1. www.forbes.the-good-the-bad-the-ugly.com 2. www,geography.about.com > globalization

The Home Place Essays

The Home Place Essays The Home Place Paper The Home Place Paper The Home Place The story ‘’The Home Place’’ by Guy Vanderhaeghe is about a relationship between a father and a son. Throughout the story, the readers see and understand the reason behind Gil and Ronald broken relationship. In this story, the author implies that when a father puts is love for is land before his son, their relation will suffer. Vanderheaghe explains his theme with the help of the characters traits, the setting and conflicts. The author develop the character of Gil as a father who love is land, is dominant and cold. During the story, Vanderheaghe demonstrates many times how much Gil adore is land and how important it is to him, for example: † To Gil it had all been beautiful. It was all he had ever wanted, to possess that place and those sights†(15). Gil is also a man who likes to be in control. He wants things to go his way even if it not is responsibility anymore. At one point in the story, Gil even interfere in his son life when he 2 tell him: ’’‘’No divorce, Ronald,† he repeatd. †No divorce. Don’t let that bitch break up the home place†Ã¢â‚¬ (16). Ronald relationship with is father is awful because his father is not only dominant with him but he is also really cold toward him. The best example of this coldness would be at the end when Gil says to Ronald: ‘’You’ve got no right to look down on me,’’(17). Vanderhaeghe use of conflict emphasises the problem between Gil and Ronald. In the story, the readers quickly understand that two of the major conflicts are between Gil and his son. To start off, Gil is a shame of his son because he never accepted his choice. To Gil everything his son is doing is wrong. Even when he got married Gil speculation was ‘’that is son married only to get his hands on land’’(14). The other main conflict in ‘’The Home Place’’ would be about the land because Ronald is not taking care of his father land, the way Gil would like. When Ronald says to his father that he would ‘’open a pit and peddle gravel to the Departement of highways by the yard’’(16) instead of using the land to grow wheat and carrots, Gil is disgust with his son’s idea. During the story, readers can see Ronald’s internal conflict. He feels like he is not important to his father and that he 3 will always come second to the land. That’s probably one of the reason why †All spring Ronald fired his huge, gasoline-laced bonfires of scrub oak and poplar’’(16). Destroying the land is the only way Ronald can use to get even with his father for making him feel that way. The details that Vanderhaeghe uses to describe the setting demonstrate the love that Gil has for his land. This story takes place mainly on the family land. The Home place is special to Gil â€Å"Situated in a valley’’ (14) and ‘’down by the river’’ (14). The home place also have a beautiful land that ‘’consisted of the original quarter Gil’s father had homesteaded, the pre-emption, and another 320 acres picked up cheap from a Finnish immigrant’’ (14). The farm is everything Gil ever wanted and a day away from all the beautiful sights the farm has to offer made Gil restless. Another important part of the setting is the broken fences Gil wanted to repair because ‘’the wires were rotten with rush’’ (17) and ‘’They were a disgrace’’ (14). The fact that Gil wants to repair the fences so badly makes the readers understand how attach he is to the land and how important the image of the farm is. Even dough the land is no longer his, he still wants to be proud of the land he gives to his son. In conclusion, the author made it clear that Gil would have given up anything for his land. He never had a relationship with it son, Ronald, because he was too preoccupied with the home place to give him any attention. Gil is also someone who needs to be in charge but Ronald still want against his wishes when he got married and started to destroy the land. Ronald’s father never had any respect for is son and that’s one of the reason why they were so many conflict between the two of them.

Describe Yourself Essay Whats It All About

Describe Yourself Essay Whats It All About Whether youre applying to a community college, a four-year college or university, or graduate school, you may be asked to write an essay describing yourself. A Describe yourself essay may also be required for applications to extracurricular programs, special experiences, and certain types of employment. So, where do you begin when describing yourself in writing? Do you talk about your weaknesses, or just your strengths? Make Preliminary Notes Before you begin writing the essay properly, take some time to jot down a few thoughts. You dont have to include everything you write down here in your final draft; this is merely a brainstorming exercise that will give you some material to work with. First, make a list of your strengths and weaknesses. These can be physical, mental, emotional, or spiritual qualities. While youre at it, add any special talents or hobbies. If you have any personal heroes, list those names, whether theyre celebrated figures or not. Next, write down any significant experiences youve had, such as witnessing the death of a pet or family member, winning an award, traveling, or becoming sick or injured. Add dates to refresh yourself, in case you plan to write a chronological account. Finally, list some adjectives that you think other people might use to describe you, as well as words youd use to describe yourself. Pick a Format Some institutions will give you details on how to compose your essay. In the absence of such instructions, its always safe to go with a standard five-paragraph essay. This consists of an opening paragraph, three solid paragraphs, and a conclusion. Dont Be Too Negative While its fine to mention rough times or personal weaknesses, some things are better left unsaid. A run-in with the law or a battle with a serious mental illness is generally not the kinds of things you want to talk about in your essay. Always try to use negative characteristics or events to highlight your good points. For example, if one of your parents abandoned your family and you had to become a caretaker to your younger siblings, you can talk about how that experience made you more mature, responsible, and compassionate. But focus more on the outcome than the bad experience. The more skilled you are as a writer, the better youll do at turning negatives into positives. Open Strong Whether or not you have the option to give your composition a title, youll want your first sentence to reel the reader in. You could mention something that other people say about you, refer to a favorite quote, or make a joke that shows your personality. Write a Thesis Statement A thesis statement, which also belongs in your introduction, is different from a hook or a headline. The thesis is your overall description of what youre writing about. Here are some examples: __________ was the most significant experience of my life. The three values that best define me are __________, __________, and __________. My lifelong dream has been to __________. If theres one thing I regret, its __________. If I can accomplish these three things before I die, I will have lived a good life: Compose Three Distinct Paragraphs There are several ways you can arrange your essay. You might write one paragraph about each of your most important values, memories, or goals. Or you could devote one paragraph to describing yourself physically, one to describing yourself psychologically, and one to describing yourself socially. Again, the construction of the essay may be part of the assignment, so be sure to follow any instructions you receive. Close Memorably In your closing paragraph, sum up the basic point or points you want the reader to remember about you. What did you strive to say in the body of the paper? Recap it here by saying something like, Whatever happens, I know I will have my __________, __________, and __________ to guide me. Finally, remember that this is not a research paper or book report. Keep the tone casual, and make sure it sounds like the real you. If youre naturally a serious intellectual, thats fine. But if youre a clown, it wont serve you well to write a stuffy-sounding paper.

Any subject in the criminal justce systre Essay

Any subject in the criminal justce systre - Essay Example Investigation usually marks the first step for a criminal case. The police usually perform this. In this regard, when a person is accused of offense, the police are usually required to carry out investigation to gather enough evidence, among them identifying the suspect in order to support an arrest. For instance, when an individual is confronted with robbers, the victim is usually required to report the matter to the law enforcement officers, who will then begin investigation based on the information provided by the victim (Burns, 2006). Search Warrant Usually, when the investigation officers are satisfied that there is probable cause for a crime, the law enforcement officers are required to seek for a search warrant, which permits them to search the premises. A probable cause in this case referred to the standard of proof indicating that there are enough facts on the ground showing that there is enough evidence of a criminal activity in a given place. Judges usually issue the search warrant, when they are satisfied that there is indeed probable cause. This implies that if the law enforcement officers fail to show enough evidence, then the police officer may be denied the right to carry out the search. However, a search warrant may not be needed under emergencies usually referred to as exigent ‘circumstances’ (Neubauer, and Fradella, 2010). During a search, the officers may interrogate witnesses, who might have been at the scene of the alleged crime

The Leitmotif Principle Essay Example | Topics and Well Written Essays - 2000 words

The Leitmotif Principle - Essay Example Today many types of music that have dramatic narratives ranging from television, video games, movies and rock operas borrow a lot from the leitmotif approach (Gorbman, 1987:43). This paper will discuss the leitmotif principle in opera and film. It will also explain and illustrate the operation of the principle during the nineteenth century opera and the influence and legacy it had on the twentieth century art. The term leitmotif was first introduced to the operas by Richard Wagner describing a recurring melody related to a specific object, character, emotion, people or idea. A musical phrase occurs constantly and is associated with the above aspects (Dahlhaus, 1989:195). This principle has been used as a standard technique or method of how film music or dramatic music is used and was applied especially during the era of classical Hollywood films during the nineteenth century (Burt, 2000:34). Some of the notable composers who used the principle in their works include Max Steiner and Erich Korngold. It is important to ask what qualifies as a leitmotif in film. To answer this question, several factors characterise a work that can be considered to have used the leitmotif principle.