Question : Why the Earth is having its own atmosphere ?
Option 1:
Option 2:
Option 3:
Option 4:
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Correct Answer:
Solution : The correct answer is gravity.
Earth has atmosphere because it has gravity which keeps all the gases, water vapours and other mass carrying materials attached to the earth's crust. While air pressure is directly related to gravity on earth i.e. more the height less would be the air pressure and vice versa. However gravity is not uniform all around the earth.
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