Question

Defined atmosphere?
How many layers are there in atmosphere?

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Answer 1

• The atmosphere is the blanket of gases which surrounds Earth. It is held near the surface of the planet by Earth's gravitational attraction. Without the atmosphere there could be no life on Earth. The atmosphere: ... keeps the climate on Earth moderate compared to that of other planets.
• 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.

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Answer 2

1.

the envelope of gases surrounding the earth or another planet.

"part of the sun's energy is absorbed by the earth's atmosphere"

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