Yes, this is the reason why we have an atmosphere
Air has no effect on gravity. But the presence of air can change the response of an object to the force of gravity alone.
Gravity is a function of mass and distance. So, no air pressure does not affect gravity.
Yes. Without gravity, we would have NO air to breathe.
Air has mass, and gravity pulls anything with mass. The gravity of the earth "pulls" air down towards it's center.
Yes, gravity affects the air that we breathe. That is why it is harder to breathe when we go up high mountains. There is less air there. Without gravity, the air would float off into space, just as we would.
Gravity is stronger. If gravity was not stronger air would make us float away. Air is trying to make things go up and gravity is making things go down.
First of all, the atmosphere is the air. Secondly, air is matter, all matter is affected by gravity. Imagine this: the sea is liquid, it lies on the earth, pulled by gravity. the atmosphere is also like this except it is a "sea" of air, it lies on the earth, pulled by gravity.
It is gravity.
It does not.
Air
The sky is air and gravity keeps the air close to the ground so we can breeth it in .
Gravity is not "used". In gymnastics, gymnasts almost defy-gravity by flipping in the air but have no control of what gravity does.