Answer:
(c) Air is an inexhaustible natural resource, In
the absence of air, there would be no life, no winds, clouds or rain, no fires
and no protection against harmful solar radiations. This is because the
atmosphere covers the earth, like a blanket. As air is a bad conductor of heat
the atmosphere keeps the average temperature of the earth fairly steady during the
day and even during the course of whole year.
The atmosphere prevents only sudden increase in
temperature during the daylight hours. And at night, atmosphere slows down the
escape of heat into outer space. For instance moon, which is about the same
distance from the sun that the earth is, but it lacks an earth-like atmosphere.
As a consequence of absence of atmosphere the temperature of moon ranges from to C.
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