OPSC OCS 2021 · Question 55 of 72

Identify the incorrect statement :

General Studies

AEutrophication is a natural process seen in fresh water bodies.
BGreenhouse effect occurs naturally.
CIn the upper part of the atmosphere, ozone causes harm to animals.Correct
DIn tropical areas, most of the forests have been lost.

Answer: C. In the upper part of the atmosphere, ozone causes harm to animals.

Explanation

When the environment becomes enriched with nutrients, it leads to eutrophication. It is a problem in marine habitats like lakes because it causes algal blooms.

Source: OPSC OCS Prelims 2021 GS Paper-I; answers per Apti Plus unofficial key

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