Current Events — HabitableZone

Current Events » in reply to No we are not talking parts per million. And anyway, how would you know SteveS' objection till he has voiced it.

CO2 levels are around 380 ppm (parts per MILLION)

Gases by percentage in the atmosphere are as follow.

Nitrogen 78.0842%

Oxygen 20.9463%

Water vapor around 1%

Argon 0.93422%

Carbon dioxide 0.03811%

Other 0.002%

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