Write about the Green revolution. Explain its two merits and demerits.
Answers
Answer:
Merits:
1.higher yield
2.Machines made for ploughing harvesting easy.
3. Surplus food can be sold to earn more .
4. Pests and insects controlled by pesticides and insecticides
5. Good irrigation enhances production .
Demerits:
1. Loss of fertility with chemical fertiliser.
2. Use of tubewells reduce the water tables.
3. Chemical fertiliser polluted ground water.
4. Kills bacteria and microorganisms helpful fossil.
5. Excessive use of fertiliser makes soil alkaline and unfit for cultivation . .......✌✨
Answer:
The chemical fertilisers, easily soluble in water, can dissolve in the groundwater and pollute it. They can kill bacteria and other micro-organisms helpful for the soil. Excessive use of fertilisers can also make the soil alkaline and unfit for cultivation