Explain an agricultural practice that has a harmful effect on the ecosystem.
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Use of fertilizer ,HYV seeds chemicals.
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1) Excessive use of fertilizer make the soil poor in nutrients and kill many useful microbes.
2) Excessive use of non-biodegradable chemical pesticides leads to biological magnification.
3) Extensive cropping causes loss of soil fertility.
4) Excessive use of groundwater for agriculture lowers water table.
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