Question

It's not good to we chemical fertilizers .why.
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Answer 1

Though chemical fertilizers increase crop production; their overuse has hardened the soil, decreased fertility, strengthened pesticides, polluted air and water, and released greenhouse gases, thereby bringing hazards to human health and environment as well.

Answer 2

However, an immediate concern with chemical fertilizers is the effect on human health. Human Issues. At the very least, food crops produced using chemical fertilizers may not be as nutritious as they should be.