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This holds a planet's atmosphere close to its surface:

Asked on by | Votes 0 | Views: 21 | Tags: general knowledge     | environmental science     | Add Bounty

This holds a planet's atmosphere close to its surface:

A).  Radiation

B).  Gravity

C).  Cloud cover

D).  Moisture

E).  Pressure


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Answered by on | Votes 0 |

 Gravity



Our atmosphere is a mixture of gases that surround Earth. It is kept in place by the pull of Earth's gravity. If Earth was a much smaller planet, like Mercury or Pluto, its gravity would be to weak to hold a large atmosphere.

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