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Which one among the following is NOT a reason for low biodiversity?

June 1, 2025 by rawan239

Which one among the following is NOT a reason for low biodiversity?

Habitat stress

Abundance of ecological niches

Geographical isolation

Dominance by one species

This question was previously asked in

UPSC Geoscientist – 2021

Download PDF Attempt Online

The correct answer is Abundance of ecological niches.

Ecological niches are the roles and positions species occupy within an ecosystem. An abundance of ecological niches means there are many different ways for species to coexist and utilize resources without direct competition, which typically leads to higher biodiversity. Therefore, an abundance of ecological niches is a reason for *high* biodiversity, not low biodiversity.

Reasons for low biodiversity include habitat stress (harsh environmental conditions), geographical isolation (limits species migration and gene flow), and dominance by one or a few species (which outcompete or exclude others).

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