A) drying of the lake very soon due to the algal bloom
B) an increased production of fish due to the lot of nutrients
C) death of fish due to the lack of oxygen
D) increased population of aquatic food web organization
E) None of the above
Correct Answer: C
Solution :
Domestic sewage rich in organic waste will generate a very high demand of \[{{O}_{2}}\] in order to get biodegradation, thus depleting the dissolved \[{{O}_{2}}\] below critical level necessary to support aquatic life fish, which is very sensitive to the dissolved \[{{O}_{2}}\] available in water, will start dying if the level goes below 4mg/L.
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