Question 13: In An Inconvenient Truth, the author uses which of the following to emphasize how humans have a chance to improve the atmosphere? A. The illustration of the sun’s energy as it travels to and from the earth
B. The content under the subheading “What Exactly Are Greenhouse Gases?”
C. The content under the subheading of “Crisis=Opportunity”
D. The chart of “Atmospheric CO2 at Mauna Loa Observatory”