Answer:
1) Use of more & better technology:
After the Green Revolution farmers started using modern technologies and bought new tools to get good crops.
2) Use of HYV seeds:
They started using HYV (High Yielding Variety) seeds & new hybrid seeds which grow faster and better than the normal kind.
3) Use of pesticides & insecticides:
Farmers also started increasing the use of pesticides & insecticides in the hopes of a fruitful harvest gain & to keep of insects from eating crops during its maturation period.
4) Pollution & Contamination:
Increased use of modern technologies leads to smoke & pesticides & insecticides cause bio-magnification & also destroy the nearby water bodies.
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Hope it helps ⚜