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Question
Mammals resembling horse, hippopotamus, bear and rabbit were once found only in South America, but they disappeared due to __________.
Mammals resembling horse, hippopotamus, bear and rabbit were once found only in South America, but they disappeared due to __________.
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Solution
The correct option is B Continental drift
Earlier there was only one continent called Pangea, on Earth. Over the years continental drift broke the single continent to multiple chunks. Mammals resembling horse, hippopotamus, bear and rabbit were once found in South America. Due to the continental drift, when South America joined North America, these animals were overridden by North American fauna. Due to the same continental drift pouched mammals or marsupials of Australia survived because of lack of competition from any other mammals.
Earlier there was only one continent called Pangea, on Earth. Over the years continental drift broke the single continent to multiple chunks. Mammals resembling horse, hippopotamus, bear and rabbit were once found in South America. Due to the continental drift, when South America joined North America, these animals were overridden by North American fauna. Due to the same continental drift pouched mammals or marsupials of Australia survived because of lack of competition from any other mammals.
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