Atmosphere

Match it! Select the correct answer from the pull down...Good luck!

Air has pressure because

The ozone layer is located in this layer.

What is the source of all energy in the atmosphere?

What human activity might explain an increase in carbon dioxide levels from early 1900s to 1990?

Instruments used to measure air pressure are called

Temperature increases in the stratosphere because

This gas makes up 21% of our atmosphere:

What layer of the atmosphere is closest to Earth?