GIVE REASON:A)THE COLOUR OF CLEAR SKY IS BLUE WHY?B)STAR TWINKLE WHY?
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Explanation:
A. A clear cloudless day time sky is blue in color because molecules in the air scatter blue light from the sum more the that of the red light.
B. Stars twinkle in the night sky because of the effect of our atmosphere.When starlight enters our atmosphere it is affected by winds in our atmosphere and with areas by different temperatures and various densities.This cause the light from the star to twinkle when seen from the ground.
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