Most of the earth's atmosphere is within 10 miles of the earth's surface
The air pressure at sea level is about 14.7 pounds per square inch
At 10,000 feet the pressure is about 10 pounds per square inch
The troposphere starts from about ground or water level up to about 11 miles high
The temperature generally decreases as altitude increases
The stratosphere is between 11 and 31 miles off the surface
The stratosphere increases in temperature as altitude increases
The earth's atmosphere was formed from planetary degassing, a process where gases are released from the earth's interior
Life forms modified Earth's atmosphere since their evolution
The atmosphere is mostly made of nitrogen
Nitrogen is important for the development and maintenance of life
Oxygen is second most in our atmosphere
Oxygen is good for keeping you and your brain alive and working
The third most in our atmosphere is Argon, it is good for non reactions
Carbon dioxide is the fourth most gas in the atmosphere, it is good for providing plants the ability to produce oxygen.
Other non gases are Neon, Helium, Krypton, and Hydrogen
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