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Solar energy - universal non polluting safe
wind energy - can easily be produced in windy places
hydel energy - produced from water and is very useful
Geothermal energy - produced from natural water springs
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water is a renewable source⇒water is a natural resource and is very abundant in nature,water is used for creating electricity,used in power plants.It is renewable source becoz we get it back through rainfall or downpour.
sunlight is another renewable source of energy also it is very abundant,we get it directly from sun⇒used for again generating electricity,we get vitamin D from sunlight,it is also important some chemical reaction,used by plants to make their food.
wind is also a renewable resource used again for generating electricity where water is not available in abundance,windmills are an example of it.

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