[UPPSC 2019]
- It is a phenomenon of nutrient enrichment of a water body.
- It depletes dissolved oxygen from the water.
Select the correct answer using the codes given below :
- (a) 1 only
- (b) 2 only
- (c) Both 1 and 2
- (d) Neither 1 nor 2
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(c) Both 1 and 2
Eutrophication:
Eutrophication is a process when a body of water becomes overly enriched with minerals and nutrients that cause excessive growth of plants and algae.
Hence, statement 1 is correct.
The process results in oxygen depletion of the water body.
Hence, the statement is 2 correct.
Eutrophication leads to algal bloom
The eutrophic water body is a body of water rich in nutrients and so supporting a dense plant population, the decomposition of which kills animal life by depriving it of oxygen.
Phytoplankton which contains algae and blue-green bacteria thrive on the excess nutrients and their population explosion covers almost the entire surface layer such a condition is known as an algal bloom.
Effects of Eutrophication: