Home Biology Biodiversity and Conservation Biodiversity: Levels and Patterns Which of the following is the member of 'The…
Biology Biodiversity and Conservation Biodiversity: Levels and Patterns Single Correct MCQ
Published on: August 13, 2026

Which of the following is the member of 'The Evil Quartet'?

A
Over-exploitation
B
Co-extinction
C
Alien species invasion
D
All of these

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Text Solution

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The correct answer is:
D

“The Evil Quartet” is a term used by biologists to describe the four major causes of biodiversity loss:

Over-exploitation – excessive use of natural resources

Co-extinction – when one species goes extinct, dependent species also die

Alien species invasion – introduction of non-native species that harm local species

Habitat loss and fragmentation – destruction of natural habitats

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