...becomes warm can cause coral bleaching which makes the tissue of the coral to become white. That does not mean that the coral is dead in any way, but make the coral become weakened than its original standard. In the Caribbean they have lost 50% of there coral reefs because of the bleaching in one year. But not only are the reefs becoming white because of warm water temperatures also cold temperatures also cause coral bleaching’s in Florida. This made some corals die. Coral reefs provide sea creature’s shelter, secure shorelines, and back fishing industries. The factors for coral bleaching are changes in salinity, diseases, bright sunlight when the water is already too warm, and pollution. There are ways to prevent it like walking instead of driving, plant a tree anywhere, and support local legislators. What is an ecosystem? An ecosystem is living things like plants, animals, and organisms. These depend on non-living things like water, sun, temperature, pressure, and nutrients. What causes ecosystem destruction?...
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...Hunting Helps Animal Populations Imagine a world without lions or deer? Hunting helps control the population of animals. If no one went hunting there would be too many animals in certain areas. Deer over populate and wander down into neighborhoods. They cause a lot of problems when they get into the cities. There is a difference between hunting and poaching. Hunting is hunting an animal with a tag or a license. Poaching is hunting an animal without a tag or license; illegal hunting. Poaching and habitat lose is the two main reasons making animals go extinct or endangered. Hunting helps control the animal population; poaching makes them extinct or endangered. When you go hunting you have a tag and a license. Poaching is when you go hunting but you don’t have a tag for that animal or you don’t’ have a hunting license. Many countries have put bans on animals that live in that area. “Bans clearly not only do not work, but accelerate the extinction of species” (Bore). The lion has not been allowed to be hunted, in Kenya, for over 30 years. During that period, the size of the lion population has dropped to ten percent of the neighboring Tanzanian lion population (Bore). The Tanzanian lions has been allowed to be hunted for the same period of time as the Kenya lions have been banned. The numbers in different countries are rising for the animals that are being hunted legally, but for Africa, the numbers are dropping. Not only does hunting help with controlling animal population, it...
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...Title: the extinction of Mammoth Introduction * Location and life of mammoth * Causes of extinction * Reasons for extinction Body Causes for extinction * activities as cause of mammoth extinction * Climate change in the extinction of mammoth(climate warming) * Loss of habitat * Radiation cause Reasons for extinction * Hunting and poaching * Protection from mega fauna animals. * Habitat loss due to vegetation and other factors * Use of skin for cloths and horn for ivory item. etc. Summary Mammoth is a large and extinct elephant of the Pleistocene epoch; these types of elephants were hairy and had a sloping back and long curved tusks. These big elephant has gone extinct and throughout this paper I’ll be talking about how these mega fauna animals have gone extinct, what caused their extinction, the reason for this extinction etc. Mammoth are thought to be extinct due to the climate change because they used to live in glaciers areas, they are also thought to have gone extinct because of man activities on them like hunting and poaching. The last thing I’ll be talking about in this paper is the reason why these animals have gone extinct. Journal article: * The extinction of the woolly mammoth and the archaeological record in Northeastern Asia Authors: Pitulko and Nikolskiy, march 2012 Pitulko, V. V., & Nikolskiy, P. A. (2012). The extinction of the woolly mammoth and the archaeological record in Northeastern Asia...
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...De-extinction or not? The ethical dilemmas of cloning extinct species have been a...
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...Urbanization is another leading factor to the sixth mass extinction. Brian Czech, in an article titled Urbanization, habitat loss, and extinction in nineteenth-century America, Holley 2 states, “Urbanization endangers species by replacing habitat directly and by depleting resources needed to support urban economies.” People are taking away these animal’s homes and replacing them with resources that only benefit humans and the economy. These animals are forced to survive without the resources and environment they are used to (chicagobotanic.org). Urbanization does not only affect the animals on land but it also affects the species in the ocean and their habitats. Urban Runoff is a huge threat to species in the ocean. Urban Runoff happens when...
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...Most people go through their lives not worrying about when humans may go extinct. In the past, there has been five other mass extinctions. About 450 years ago was the first mass extinction called the late Ordovician, followed by the Devonian, Permian, Triassic and the Cretaceous extinction. All of these extinctions were caused by similar changes. The question is: Are humans in a sixth extinction? The answer is yes, humans are in a sixth extinction because of the extinction of multiple animals, humans, global warming. In the last 500 years scientist know of approximately 1,000 species that have gone extinct. From past mass extinctions more than 75 % of life went extinct. According to research at Global Biodiversity Outlook between the years of 1970 and 2006 the population of wild vertebrate fell by average of 31% and the numbers keep inclining. Another research team from the National Autonomous University of...
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...Zeke Moisey Mrs. DeMarco Honors Environmental Science 27 November 2012 Chapter 4 Test Questions 1.(5pts) Why are large animals that we tend to value (bison, whales, etc.) more likely to go extinct than smaller ones that are nuisances (mosquito’s, mice)? Larger mammals, on the other hand, must endure the hard times when there’s little food or extreme weather. Their large size constrains them from digging burrows or lowering their metabolic rates for extended time periods. In a sense, larger mammals face the elements head-on like a fearless adventurer who might not make it through alive, and is forever changed by the experience. On an individual level, large mammals tend to live significantly longer than smaller ones. For example, elephants can live up to 70 years, while shrews are lucky to reach two. Because of their faster generation times, small mammals should evolve faster, and small mammal species and genera should appear and go extinct faster – but this is not the case. But overall, small mammals’ ability to hibernate or enter a state of torpor seems to give them the largest benefit for prolonging their species duration. And the small mammals that didn’t hibernate had relatively faster evolution rates, as they were forced to cope with the elements. The longest living genera in the study were a mole, two gliding squirrels, and two dormice, which lasted about 16 million years, and all had the ability to burrow or hibernate. The tapir was the only large mammal that...
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...thousand more have lived previously and become extinct. Most of these extinctions occurred before humans evolved, and the species are known to us only through fossils The Dodo The dodo was a large (50 lb) flightless bird that lived on Mauritius, an island in the Indian Ocean. It lived undisturbed for so long that it lost its need and ability to fly. It lived and nested on the ground and ate fruits that had fallen from trees. The island was uninhabited and the dodo had no natural predators. Then Mauritius was colonised in 1638. Dodos were hunted for food and easy to catch because they were not afraid of people. New competitors were brought onto the island (including pigs, cats and rats). These competitors ate the dodos' eggs in their ground nests and also ate the dodo’s young. The last dodo was killed in 1681. Answer the following questions using information from the text: 1. What was the dodo? 2. Out of the four causes of extinction we have learnt about, which two caused the extinction of the dodo and why? 3. When did the last dodo die? Dinosaurs There are many theories as to how the dinosaurs became extinct. Keep in mind that there is no absolutely proven theory. Asteroid Theory According to this theory a large asteroid or comet collided with Earth about 65 million years ago. Scientists think that such a large collision would throw so much dust into the air that sunlight would not be able to shine and plants and animals would die. The dramatic changes in climate that...
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...threatened and endangered animals live in forests, but not only animals rely on the forests, but 1.6 billion people rely on the benefits forests offer, including food, fresh water, clothing, traditional medicine and shelter. With our population growing more and more each second the world is threatening these forests and jeopardizing the benefits given. According to worldwildlife.org, 46-58 thousand square miles of forest are lost each year-equivalent to 36 football...
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...Once a long time ago, our ancestors needed to hunt for food. When they caught an animal that they could eat, they cooked it and ate it because that's what the needed to do to survive. But, they did not hang the head of the animal they killed on the wall, and they did not sell the animals tusks to another family. Unlike our ancestors, many people in our era do those exact things. A majority of the people who participate in trophy hunting believe that it helps conservation and population control. The sad truth is that it does not. In fact, trophy hunting is a cruel sport that should be banned. In trophy hunting, instead of letting the weakest of the species due off, trophy hunters kill the cream of the crop (In defense of the Animals). This...
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...The Extinction of the Woolly Mammoth Lee Rhubin English Composition II Instructor J. Kobus 10/25/2010 Abstract There have been many theories and hypotheses explaining why the woolly mammoth became extinct. In fact, there are ongoing studies and research attempting to offer more evidence for the different theories. While evidence from the remains and carcasses of woolly mammoths found frozen in the northern parts of the globe strengthen the claims of scientists and researchers, other methods of knowing the real causes are still elusive. Two main arguments aimed at explaining these mammals’ extinction continue to be debated. Climate change as the reason for their demise is countered by the theory that human hunting activities killed the species. However, there are some hypotheses that the combination of both (climate and hunting) is the cause of the woolly mammoth’s extinction. This paper provides the evidence that each theory has gathered to support its claim. The Extinction of the Woolly Mammoth The woolly mammoth (Mammuthus primigenius) is one of the kinds of mammoths that existed. This animal is actually considered an elephant but in reality it is only a distant cousin of the Asian elephant. Its body was covered with hair. Its shoulders were emphatically humped, with a sloping back. The ears were much smaller than the ordinary elephants we see today, with a shorter tail. Teeth were differently shaped and structured; the trunk was shorter and hairier with...
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...Introduction: a. A species is declared extinct after many years of not being spotted. Because it takes so long to define an entire species as extinct, is why we have the ICUN’s endangered animals list. b. Humans are contributing to the loss of these animals in huge ways, but also becoming more aware and trying to help more than ever in previous years. c. The purpose of my speech today is to inform you on a few ways humans are hurting and a few ways humans are helping wildlife. II. Humans are affecting different species in many ways and most for the worse. A. “Habitat loss is probably one of the greatest threats to the variety of life on this planet today.” (WWF) 1. Habitat loss can be in many different forms, like loss of areas populated by different species or mating grounds. Also erosion and vegetation loss can cause lack of shelter and food for animals. 2. One of the biggest areas that is experiencing deforestation is the amazon rainforest because of human settlements and development of the land. B. Pollution is one of the main ways in which humans have caused change and threats to wildlife habitat. 1. Pollution can be defined as the human alteration of chemical or physical characteristics of the environment to a degree that is harmful to living organisms. (marinebio.org) 2. Synthetic chemicals like DDT and dumping waste in to lakes and oceans is one of the main causes of pollution, effecting not only water animals but land animals too. C. Trophy hunting of...
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...“The extinct Caspian Tiger” For centuries animals have become extinct due to natural selection being not in favor of that particular species. Changes in climates change that particular region and as a result plants died out and/or another animal species shortens and causes another to starve out. Humans participate in a lot of the damage that has been done to many animal species through pollution, hunting, and the destruction of the places where they live. The Caspian Tiger also known as the Turan tiger was last recorded in the wild until the early 1970’s. The Turan tiger was in the past found populating a multitude of areas like the southeast hill and lowland forests of the Caucasus, lowlands forests of Priship, and subsequently moved toward the eastern plains of the Trans-Caucasus, and the Zangezur Mountains. Within Middle Asia it populated the southwestern Turkmenia, Sumbar and Chandyr rivers; in the western and southwestern parts of Kapet- Dag, the northern foothills of Ashkabad, in the Afghanistan upper range at Herat and along the jungles in the lower river areas around Tedzhen, Murgap, Kushka, and Kashan rivers. More over, along the Fergana Valley, western branch of Talas Alatau, and the entire Aral Sea area. The wide ranging of distribution can be evaluated by the new research reveals that 10,000 years ago the ancient tigers went through it along China’s Gansu Corridor. The Caspian tiger was known to follow the migratory herds such as the boar. The Kazakh people...
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...Endangered Species Think back to the first time you went to the zoo. Do you remember the excitement you felt when you got your first glimpse of a tiger? Or maybe your favorite animal was an elephant. These species and many others are in danger of becoming extinct. I’m going to explain to you the process to get a species listed as endangered and the protective measures taken to help them recover. I’ll also talk about the success rate of these efforts. The first step to protecting a threatened species is to get them listed. The process to have a species added to the list can take up to a year. Species are listed by 2 classifications, threatened or endangered. A threatened species is a species that could become endangered in the near future without proper protection. An endangered species is a species that could become extinct. To start the process someone must first file a petition or conduct a survey of the species. Anyone can file a petition providing there is enough biological evidence to warrant further investigation. Members of the U.S. Fish and Wildlife Services or the National Marine Fisheries Service complete the surveys. Several factors help determine if a species is in need of protection. A few of those factors are: Changes in habitat, over utilization due to commercial and recreational purposes, disease or predation, and inadequate regulatory Laws. Within 90 days of receiving the petition or survey they must decide if further investigation is warranted. If it...
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...Intro: Imagine a world without a specific species, nobody can see them anywhere anymore, not even the zoo. Well it’s a tragedy that is very possible and is happening here in our realm. Poaching in Africa is very natural, although globally illegal, and any animal is susceptible to these executioners. Not only are animals being affected by poachers, but also tribes that occupy the lands rely on the animals for food. The result of so many animals being poached in areas that tribes employ, the tribes are being malevolently accused of the rapid decline of the animal population. Most of the animals being poached will, most likely, be extinct in years to come due to the rapid decline of animals such as elephants and rhinos. As viewers of these malicious transgressions, it is our duty to become protectors of these magnificent creatures before they become extinct. It’s our time to act. Please help these defenseless creatures. Explain the Issue: In...
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