In Iowa, a small, deep lake in the summer becomes stratified with warmer, less-d

Question

In Iowa, a small, deep lake in the summer becomes stratified with warmer, less-dense water at the surface and colder, denser water near the bottom. As fall air temperatures decrease, the surface water cools and then drops toward the bottom, mixing the lake levels together. As a result of this mixing nitrogen and phosphorus are added to the lake nitrogen and phosphorus decrease near the surface of the lake nitrogen and phosphorus increase near the surface of the lake None of the choices is correct.

Explanation / Answer

Solution:- 'C' is the correct option.

Nitrogen and Phosphorous increases near the surface of lake.

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