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The two gasses the Earth released as it cooled.
What are carbon dioxide and water vapor?
The part of the atmosphere early Earth lacked, and was therefore hot.
What is the ozone layer?
45% as a fraction in simplest form.
What is 9/25?
0.014 as a percent.
What is 1.4%?
The layers of Earth's atmosphere in order form closest to the Earth to furthest.
What is this a list of? - Troposphere - Stratosphere - Mesosphere - Thermosphere - Exosphere