A comet<span> is an icy small Solar System body that, when passing close to the Sun, warms and begins to evolve gasses, a process called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail.</span>
Clouds can cover up the sun, which is the natural source for heat everywhere. When the sun is not in sight, or thickly covered by clouds, this limits the suns radiation and heat waves therefore causing less light and heat.
Answer:
Atmosphere is the envelope of gas which surrounds any celestial body.
Explanation:
The importance of atmosphere of the earth are:-
⇒The presence of the atmosphere plays a significant role in the water cycle. It facilitates the formation of clouds which remains suspended until they are heavy enough to pour down on the earth as rain,hail or snow.
⇒Protects the life forms of the earth from the harmful UV rays of the sun.The presence of the ozone layer does this by reflecting the UV rays of the sun.
⇒ It keeps the temperature of the earth constant so that it is suitable to support life.
⇒It protects the earth from smaller meteors.
⇒ Contains N2O2 and other gases which are necessary to support the life form on the earth.
⇒Facilitates combustion and without the atmosphere combustion is not possible.
Hope this helps
Because of oceans, mountains, and trenches, the earth is not as round.
