WAEC - Agricultural Science (2015 - No. 53)
The effect of fertilizing a fish pond with compost manure on phytoplankton population and fish yield is such that
Phytoplankton population decreases as fish yield drecreases
Phytoplankton population decreases while fish yield increases
Phytoplankton population increases while fish yield drecreases
Phytoplankton population increases as a fish yield increases
Explanation
Fertilizing a fish pond with compost manure typically enhances nutrient availability, increasing phytoplankton, which in turn supports higher fish yields.
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