Question

define the atmosphere what is the significance of the atmosphere​

Answer 1

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The atmosphere is a thin layer of gases that surrounds the Earth. It seals the planet and protects us from the vacuum of space. It protects us from electromagnetic radiation given off by the Sun and small objects flying through space such as meteoroids.

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Answer 2

atmosphere is an envelope of air , that surrounds the earth surface . it's relatively a thin layer containing gases , dust particles , water vapour which protect and cover our earth as a blanket.

atmosphere contains oxygen  - it's the main gas for the survival for living organisms.

carbon - di - oxide in the atmosphere  is needed for the plants to perform photosynthesis.