1.why do we need to look alternatives sources of energy other than fossil fuels? 2. why should fossil fuels be used judiciously? write any two reasons. 3. although coal and petroleum are produced by degradation of bio-mass, yet we need to conserve them.why? give reasons. 4. list and explain any two advantages associated with water harvesting At community level.
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1.we use petrol,diesel etc other than fossil fuels because they are limited in nature.
2. formation of fossil fuels takes millions of years to replenish. so we should use them judiciously.
they get exhausted easily. so use them in a proper way.
remaining 2 let the other helper answer.
2. formation of fossil fuels takes millions of years to replenish. so we should use them judiciously.
they get exhausted easily. so use them in a proper way.
remaining 2 let the other helper answer.
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4-Water harvesting - It is method to capture every trickle of water that falls on the land.
(i) Recharges wells/ Ground water
(ii) Provides moisture for vegetation
(iii) It is not lost by evaporation
(iv) It does not provide a breeding place for mosquitoes
(v) Prevents ground water from contamination due to human and animal wastes.
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