0. Short answer type questions.
1. What is atmosphere?
2. Name the gases present in air.
3. Name the different layers of the atmosphere.
4. Why do living beings need air?
Answers
Answer:
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Explanation:
1.the envelope of gases surrounding the earth or another planet.
2.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.
3.Earth's Atmospheric Layers
Troposphere. The troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles). ...
Stratosphere. The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high. ...
Mesosphere. ...
Thermosphere. ...
Ionosphere. ...
Exosphere. ...
4.Breathing is part of a process called respiration. During respiration, a living thing takes in oxygen from the air and gives out carbon dioxide. This process gives animals and plants the energy to eat, grow, and live life!