Question

4) Define one atmosphere.​

Answer 1

Answer:

An atmosphere (atm) is a unit of measurement equal to the average air pressure at sea level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit). One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure drops as altitude increases

Explanation:

Answer 2

Answer:

The envelope of gases surrounding the earth or other planet.

Explanation: