Approximately what percentage of dry air at Mauna Loa in 1995 was carbon dioxide by volume?
The 1995 annual mean concentration was about 361 parts per million. Since one percent is 10,000 ppm, this is approximately 0.036% by volume.
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Approximately what percentage of dry air at Mauna Loa in 1995 was carbon dioxide by volume?
Answer and explanation
Correct answer C
The 1995 annual mean concentration was about 361 parts per million. Since one percent is 10,000 ppm, this is approximately 0.036% by volume.
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