The gas that is most abundant in the atmosphere is

What absorbs ultraviolet rays in the atmosphere?

Which of these sets of three items produce CFCs

The gas that is the second most abundant in the atmosphere is

How many oxygen atoms does a molecule of ozone contain?

The Earth acts like a greenhouse that catches and traps heat from the sun.

This traps heat and absorbs gases (carbon dioxide, methane..) and keeps the earth warm. Allowing heat to go back into space prevents Earth from becoming too warm

Where is the ozone located?

What chemical is responsible for breaking up the ozone?

The Montreal Protocol banned the use of CFCs. What do they hope this will do for the ozone layer?

Heat that enters the atmosphere from the sun is

Without the Greenhouse Effect the Earth would be

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