by using a scale that has 2 ends. you take 1 balloon that is empty and place it on one side. take another balloon and blow it up with air and place it on the other side of the scale. the balloon with air will go down because it weighs more, thus proving that air is real.
Physics shows that if there was no force, we wouldn't even be able to sit or stand. Gravity is a force that enables us to stand upright. If there were no forces, anything and everything would be floating in mid air. lol jokes
Air is approximately 80% Nitrogen, 19% oxygen and 1% others
It decreases. As air cools, mist, then clouds, then rain / snow forms... as the moisture is displaced.
how am i supposed to know...I ASKED YOU D:<
A vent allows for ventilation of air (allowing air in or out).
We know that gravity exists because we walk on our two feet and we do not float around in the air.
yes Adele knows god exists. as far as i know.
Atmospheric pressure exists because air has weight. The weight of the air above exerts a force on the air below it, resulting in pressure at the Earth's surface.
Water exists on land as a liquid or solid (ice) and in the air as a gas (water vapor).
No it does not because it just let you know that it exists.
when u cut it open it exists in fresh air
cold dry and stable
No, air can exist in different states depending on the temperature and pressure. At standard atmospheric conditions, air exists as a gas, but it can condense into a liquid or freeze into a solid at lower temperatures.
Air in which static instability exists. This condition is determined by the vertical gradients of air temperature and humidity.
There are cold and dry air that exists in a continental polar air mass
Because it doesn't produce air to begin with. The air exists in the atmosphere, and is compressed by a compressor.
The area of land and air where life exists is known as the biosphere. It includes all ecosystems and habitats on Earth where living organisms are found.