Question

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Answer 1

4.

b)because mercury reflects the heat while Venus absorbs the heat

Answer 2

4.i Uranus is observed to have a blue green colour due to the presence of methane gas in it.
ii. As the composition of the atmosphere of Venus is rich Carbon dioxide and hot gases so it is hotter than Mercury.
iii. The shape of the moon actually don't change but it looks because we are doing rotation and revolution.
Iv