E. Answer the following questions.
1.Differentiate between the P-Wave and the S-Wave.
2.Write two characteristics of each of the following:
(a) Crust (b) Mantle (c) Core
3.What are fossil fuels? Name any two fossil fuels and specify their importance.
4. Why is the knowledge of the earth's interior based on indirect observation?
5.What are minerals? On what basis can the minerals be identified? Give examples.
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answer 3
fossil fuels is a State of Earth crust
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