Which of the Following Is Not True of Carbon Dioxide

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) Present levels are higher than at any time in the past 800,000 years.
C) The steady increase of atmospheric CO2 is primarily from fossil fuel burning.
D) Overall,atmospheric CO2 has increased by 16% from 1992 to 2012.
E) It occurs in large amounts in the atmosphere relative to other gases.