Which of the Following Is Not True of Carbon Dioxide

question 26

Multiple Choice

Which of the following is not true of carbon dioxide?

• A) It is critically important in regulating the temperature of the planet.
• B) Today, it far exceeds its natural range of 180 to 300 pp.
• C) It occurs in large amounts in the atmosphere relative to other gases, such as nitrogen and oxygen.
• D) Overall, atmospheric CO₂ has increased by 16% from 1992 to 2012.

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