Question

Extinctions unravel ecosystems because of

• A. Habitat loss
• B. Over-exploitation
• C. Alien species invasion
• D. Co-extinction

Answer 1

The correct option is D Co-extinction

Habitat loss, over-exploitation and alien species invasion cause extinctions. Extinction of a particular species affects the survival of other species dependent on this species. Hence, extinctions in turn, cause more extinctions, causing ecosystems to unravel, eventually leading to the breakdown of ecosystems.