ECOLOGY
BIODIVERSITY AND ITS CONSERVATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the over hunting of bison of North America, because by 1889 there were fewer than 1, 000 left.
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The passenger pigeons that used to darken the skies of North America, were over hunted and by the early 1900’s were extinct.
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The ocelot (wild cat) over hunted for its’ fur and is now extinct.
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White rhinoceroses that was over hunted for its’ horn, and is now extinct.
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Detailed explanation-1: -Passenger pigeon and stellar sea cows have become extinct because of over-exploitation. Over-exploitation means harvesting species from the wild at rates faster than natural populations can recover. Over-fishing and over-hunting are both types of over-exploitation.
Detailed explanation-2: -Overexploitation. Unlike most large mammals, habitat loss has not been a significant factor in the decline of rhinos. Rather, poaching for their horn has decimated rhino populations. As early as the 5th century B.C., rhino horn was believed capable of rendering some poisons harmless.
Detailed explanation-3: -But the western black rhino and northern white rhinos have recently become extinct in the wild. The only two remaining northern white rhino are kept under 24-hour guard in Ol Pejeta Conservancy in Kenya.
Detailed explanation-4: -Poaching. Historically, uncontrolled hunting in the colonial era caused the major decline of white rhinos. Today, poaching for their horn is the main threat. The white rhino is particularly vulnerable to poaching because it is relatively unaggressive and lives in herds.