Question

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Answer 1

Answer:

a. Troposphere, Stratosphere, thermosphere, mesosphere, Exosphere

b. They carry oxygen cylinders with them which contain compressed oxygen for breathing, as the presence of oxygen becomes less at higher altitudes.

c. Oxygen is highly required in respiration, it is the supporter of combustion, and it binds steel and concrete.

d. As the meteors reach mesosphere, the density of air increase, which also increases the air resistance, which increases the heat to make the meteors burn up.

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Answer 2

Answer:

A) The layers of atmosphere in their order are:

Troposphere, stratosphere, mesosphere, thermosphere and exosphere

B) As the altitude increases, the air gets thinner and thinner, making it hard to breathe. That’s why mountaineers carry oxygen tanks while climbing mountains.

C) Oxygen is needed in respiration. It is also the supporter of combustion, that is burning. That’s why it is important to us.

D) Meteors burn up in the mesosphere when they encounter the molecules from that layer and rub up against them. This generates heat and they burn before touching the earth’s surface.

E) Of every 165m ascend, the temperature decreases by 1 degrees Celsius. This is known as the normal lapse rate.

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