Answers

2016-01-11T22:19:58+05:30
Conventional sources of energy : 1. have been in use for a long time e.g.,coal, petroleum, natural gas, etc
2. they are exhaustible
3. they cause pollution when used

non conventional : 1. yet in d process of development over d past few years ... e.g, solar, wind, tidal energy , etc
2. inexhaustible
3. generally pollution free
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