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What is the earth crust made of?
Ans) The overall composition of the Earth crust is as follows:
Silicon 27.7%
Oxygen 46.6%
Iron 5.0%
Aluminum 8.1%
All other elements 12.6%
Question: a) How does temperature changes in the stratosphere? Give a physical explanation and illustrate your answer using a diagram. b) Write a short note on ozone in the
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