the stratosphere
The stratosphere
liquid
no
Ozone layer filers the UV rays.
Well to maintain the oxygen in the earth atmosphere you need to make sure that the level of global warming is decreasing and less fumes will be able to make up the ozone layer. With a thinner layer around the earth this means that oxygen will be able to enter and exit the earths surface, allowing oxygen to still stay in the atmosphere.
CO2 weighs 44 and it is heavier than Nitrogen and Oxygen...it is denser than Oxygen still it is able to mix with other gases in the atmosphere
Because people are not able to fly without a airplanes.
They invented the first airplane and if we didn't have airplanes we wouldn't be able to travel across the oceans or to different states fast.
Since we have an atmosphere that is made up of 4 layers. One the most outer layer the thermosphere. Then the 3 most outer layer is the mesosphere. Next is the Stratosphere the third most outer layer. Last the closest layer the Troposphere which is where we all live.
The planet Mercury does not have an atmosphere in the same way that the Earth has an atmosphere; it has only a very thin layer of gases far above its surface. Because sound cannot travel in a vacuum, there would be no speed of sound on Mercury.
Airplanes changed the way of life for many because it meant being able to travel long distances in a very short amount of time. What might take 6 hours to drive will only take 1 hour to fly.
Rockets aren't necessarily good for space travel they are a necessity. You cant leave earth without a rocket... you wont be able to break through the atmosphere.