Farmers use chemical fertilizers to increase the yield of crops and pesticides to save from pests”.
A. Why is this not a good practice? What are it’s ill effects?
B. What alternatives do they have?
C. Increased use of chemical fertilizers is not advisable. Why?
D. Name the Biological phenomenon associated with accumulation of pesticides in the food chain.
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D) Biomagnification.
B) Excessive use of fertilizers are not advisable as :
(1) It leads to soil and water pollution.
(2) It can destroy the fertility of soil. As the soil is not replenished, micro-organisms in the soil are harmed by fertilizers.
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