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Biology Question 107 – NEET-UG 2023

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Among ‘The Evil Quartet’, which one is considered the most important cause driving extinction of species?

Recall the four major causes of biodiversity loss, collectively known as 'The Evil Quartet'.

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Ninja Strategy•Scale of Impact

The most important cause of extinction is the one that affects the largest number of species across the widest geographical area, which is habitat destruction.

Step 1: Understand 'The Evil Quartet'✦ Active

The 'Evil Quartet' refers to the four major causes of biodiversity loss: habitat loss and fragmentation, over-exploitation, alien species invasions, and co-extinctions.

Step 2: Identify the Most Significant Cause○ Expand

Among these, habitat loss and fragmentation is considered the most important cause driving the extinction of species. It directly destroys the living spaces of organisms, leading to population declines and eventual extinction across various ecosystems.

💡 Teacher's Secret Hint

Habitat loss has the most pervasive and widespread impact on biodiversity.

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