Which is the largest percent in the mixture of Earth's Atmosphere?

Which is the 2nd largest percent in the mixture of Earth's Atmosphere?

Which is the 3rd largest percent in the mixture of Earth's Atmosphere?

What is the Product of Photosynthesis?

What gas do plants change into Oxygen?

What percent of the Atmosphere is Nitrogen?

What percent of the Atmosphere is Oxygen?

What percent of the Atmosphere is Argon and other gases?

Which is a Trace Gas in Earth's Atmosphere

Which may be partly responsible for increased amount of carbon dioxide in Earth's atmosphere?

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