Endangered Species 3
All over the world there are species of animals and plants that are said to be "endangered". By calling them endangered, scientists say that they think the species will become extinct if something isn't done about them. Many more species are now threatened with extinction than ther should be because of many reasons. A species becomes endangered when there are fewer and fewer individuals of the species each year. There are many endagered species like the majestic Siberian tiger or the fascinating Polar Bear, which one day might be extinct and we may never see it again. Only through pictures will people see it. Once these species are gone, then they're gone forever. Many reasons are killing ...
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number of these endangered species:
Direct Causes
Direct Causes is when the animals are purposely hunted, trapped, fished, whaled, or seled to extinction. Hunting for sport has been responsible for endangering such animals as the Polar Bear and the Siberian Tiger. But the endangerment of most species that are hunted or trapped today results mainly of commercial activities. Among the animals that have become endangered for commercial reasons are several species of whales, including the enormous Blue Whale; many of the spotted cats, such as the Cheetah; and some kinds of Alligators, Crocodiles, lizards, and snakes. the Whales have been kiled for their oil,
the cats for their furs, and the reptiles for their skins. For the most part, these animals arenow protectedby law, either undr international agreement or by local laws.
Animals may also be killed when they interfere wiyh human activity. Wolves became endangered because they preyed on livestock. they were ...
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from chemical poisining of the enviorment. When the chemical DDT was widley used in the U.S to control pests, it washed off the plants to the soil and then into streama, rivers, and oceans. There it was taken up with food by tiny sea animals.When fish ate these animals, they, too, accumalated the poisin in their systems. And when birds such as osprey, bald eagles, and pelicans ate the fish, the chemicals affected the eggs laid by these birds. They began to produce eggs with shells so thin that they broke when the parents sat on them to keep them warm. Some birds stopped laying eggs completely.
Other poisins such as mercury, which is used in agriculture and industry, and ...
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Endangered Species 3. (2008, December 9). Retrieved November 23, 2024, from http://www.essayworld.com/essays/Endangered-Species-3/94371
"Endangered Species 3." Essayworld.com. Essayworld.com, 9 Dec. 2008. Web. 23 Nov. 2024. <http://www.essayworld.com/essays/Endangered-Species-3/94371>
"Endangered Species 3." Essayworld.com. December 9, 2008. Accessed November 23, 2024. http://www.essayworld.com/essays/Endangered-Species-3/94371.
"Endangered Species 3." Essayworld.com. December 9, 2008. Accessed November 23, 2024. http://www.essayworld.com/essays/Endangered-Species-3/94371.
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