Which of the following is the most important cause for animals and plants being driven to extinction?

A) Alien species invasion

B) Habitat loss and fragmentation

C) Drought and floods

D) Economic exploitation

Answer: B) Habitat loss and fragmentation

Explanation: The four major causes or ‘The Evil Quartet’ of biodiversity loss are habitat loss and fragmentation, over-exploitation, alien species invasions and co-extinctions. The habitat loss and fragmentation is the most important cause for the extinction of plants and animals.

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