1.It takes thousands of years for a ____________ of soil to be formed?
2.We must use a fuel like __________ rather than fuels which are getting depleted.
3._____________ gas Causes heat to be trapped in the earth’s atmosphere.
4.20 August is observed as ________________ day.
5. ______________ also an integral part of a forest.
6.___________ is another important non-renewable resource .
7.What is CNG?
8. ________________ Form a very important part of our natural wealth.
9. Resources which can be produced again and again are called __________ resources.
10.Air pollution has increased.
Because-
Because-
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