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★★★★
Geologist
I would also add that another substance in the atmosphere (lower stratosphere), ozone, which averages about 3 molecules of ozone to about 10 million molecules of air, absorbs 97 to 99 percent of ultraviolet radiation. If it were not for this infinitesimally small amount of ozone, there would be no life on our planet. Both ozone and carbon dioxide absorb radiation spectra at very small concentrations, ozone even much smaller than carbon dioxide. If this fact were added, I would give this an excellent rating!
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1 of 1 people found this comment helpful
★★★★
Geologist
It might also be helpful to mention that over 99% of the air in the atmosphere (oxygen, nitrogen, argon) has no ability to absorb infrared radiation. When this is kept in mind, the small concentration of CO2 doesn't seem as small anymore.

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