Question

3. Name the components of the atmosphere
and describe how they are useful to us.
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Answer 1

Answer:

oxygen is used by most organisms for respiration, nitrogen is fixed by bacteria and lightning to produce ammonia in the use of construction of nuclear and ammonia acids

Answer 2

These are the compounds present in the atmosphere :

Nitrogen — 78 percent.

Oxygen — 21 percent.

Argon — 0.93 percent.

Carbon dioxide — 0.04 percent.

Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor.

The Atmosphere and Earth's Temperature

Gases in the atmosphere surround Earth like a blanket. They keep the temperature in a range that can support life. The gases keep out some of the Sun's scorching heat during the day. At night, they hold the heat close to the surface, so it doesn't radiate out into space.