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The composition of air on Earth is as follows:

.

Nitrogen 78%

Oxygen 21%

Argon 0.9%

Carbon Dioxide 0.03%

Other trace gases include:

Neon

Helium

Methane

Krypton

Hydrogen

Nitrous Oxide

Carbon Monoxide

Xenon

Ozone

Nitrogen Dioxide

Iodine

Ammonia

TH

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12y ago

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