Question

Answer the following questions
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Answer 1

Explanation:

a) A layer of gas that surrounds our earth is called Atmosphere.

b) Nitrogen is major component of air

c) Oxygen is responsible for respiration and burning.

d) 99% is total percentage of Nitrogen and Oxygen

e) Plants realise Oxygen and take Carbon dioxide whereas Animals take Oxygen and realise Carbon dioxide

Answer 2

Atmoshere

Ans 1 - An atmosphere is the layers of gases surrounding a planet or other celestial body. ... These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as Atmosphere

Ans 2 The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen

Ans 3 - The medulla and the pons are involved in the regulation of the ventilatory pattern of respiration.

Ans 4 The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

Ans 5 - The balance of oxygen and carbondioxide is maintained in the atmosphere by the oxygen released by plants during photosynthesis and carbondioxide released by human,animals etc. in the atmosphere. The balance of oxygen and carbondioxide is made due to respreration and photosinthesis.

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