Question

Which one of the following is NOT an indicator of the degradation of a water body?
a) Increased transparency
b) Decreased species diversity
c) Increased sedimentation
d) Decreased oxygen concentration
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Answer 1

Answer:

I think that (2) is the best answer to the questions

Explanation:

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Answer 2

Answer:

Increased transparency, because it shows clear water so it will not affect the native species, the rest three will definitely affect. Decreased species means loss of the native species, Increase sedimentation shows more pollution and Decreased Oxygen conc, means native spe ies could not get sufficient oxygen