The atmosphere of the earth is heated by radiations which are mainly:

1.	The atmosphere of the earth is heated by radiations which are mainly:
A.	Radiated by the sun
B.	Re-radiated by land
C.	Re-radiated by water
D.	Re-radiated by land and water
E.	None of these
Answer» E. None of these

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The atmosphere of the earth is heated by radiations which are mainly:

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