Question

here?
Why is the atmosphere densest near the surface?​

Answer 1

Explanation:

In the atmosphere, air molecules near the surface of the earth are held together more tightly than the molecules in a higher atmosphere because of the gravitational pull of the earth on all the molecules above the surface molecules.

Answer 2

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In the atmosphere, air molecules near the surface of the earth are held together more tightly than the molecules in a higher atmosphere because of the gravitational pull of the earth on all the molecules above the surface molecules.