The average atmospheric pressure at sea level is 1013.25 mb, or 14.7 pounds per square inch. using this information, calculate the total mass of the atmosphere. convert your final answer to kilograms. assume that the earth is a sphere and that the elevation of the surface is exactly sea level everywhere. hint: the formula for the surface area of a sphere is s = 4πr2, where r = the radius of the earth = 6370 km. show all work in the space provided below.

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.

Cause of he different elevations  hope this ?