Eutrophication of a lake most likely is the result of 1. Elevated nitrogen gas level in water.
Eutrophication of a lake most likely is the result of
1. Elevated nitrogen gas level in water.
2. Elevated phosphorus levels in water.
3. Excessive concentration of CO2.
4. A decrease in oxygen content of the water.
Which of the above is/are correct?
(a) 1 only (b) 1 and 3 (c) 1 and 2 (d) 1 and 4
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