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1. Food: the amount of rich, fertile land which is used to grow crops is becoming less and less because this land is used up for some other purposes. Now the land which we are left with also getting depleted in the nutrients only because of using more chemicals to increase production to fulfill the needs of the large population.
2. Water: all of us use the clean water from water bodies for our purpose but many of us dump garbage and release toxic substances into these bodies and after several years there will be no fresh water.
3. Fuel: woods are used in the present age in large amounts as fuel, for the construction of buildings or furniture, etc; for which many trees are cut down. In the future, it may cause severe climatic changes and weather changes too.
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