Previous year MCQs

Environment & Ecology UPPSC 2020 GS-I
Question

With reference to Eutrophication, which of the following statement(s) is/are correct ?

1) It decreases dissolved oxygen of water.
2) It is a phenomenon of nutrient enrichment of a water body.

Select the correct answer from the codes given below.

Answer & Solution

Answer: (Detailed Solution Below)

Option C: Both 1 and 2

Detailed Solution:

The correct answer is “Both 1 and 2”.
Eutrophication is a process where a water body receives excessive nutrients, leading to increased plant growth. This excessive growth can deplete the water of oxygen, as decomposing plants consume oxygen.

Nutrient enrichment is a key characteristic of eutrophication. The excess nutrients, often from runoff from agricultural land or pollution, stimulate the growth of algae and other aquatic plants.

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