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It is a long duration process by which animals become extinct. Following three main are the main causes:
(1) When the animals cannot adapt to changed environment.
(2) The progeny cannot survive and cannot reproduce.
(3)Depletion of habitats due to human activities to achieve development.
It's so sad that we didn't have the chance to see this beautiful animals.. it's really cool to see this animals in person... :')

now many animals are extinct, so it is our duty to keep these animals so that they are not extinct and can continue to multiply

Protect the wildlife🐆

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