Question

what is the cause of atmospheric​

Answer 1

HEY MATE!!☺☺

I think you mean cause of atmospheric pressure..

If yes, then here you go...

Air pressure is caused by the weight of the air molecules above. Even tiny air molecules have some weight, and the huge numbers of air molecules that make up the layers of our atmosphere collectively have a great deal of weight, which presses down on whatever is below.

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