Question

what is atmospheric pressure? how is it cause​

Answer 1

Atmospheric pressure, sometimes also called barometric pressure (after the sensor), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa; 1,013.25 mbar), equivalent to 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.

Answer 2

Answer:

The presure exerted by the atmosphere on the surface of the the earth is called atmospheric pressure. It is caused by y the layer of air present on the earth..