Answer 12. in an inconvenient truth, an increase in greenhouse gases is dangerous because a. they trap more heat in the earths atmosphere b. they create holes in the atmosphere and releasing too much heat. c. they reduce humans ability to absorb oxygen through their lungs d. they increase the power of the sun, leading to negative effects such as skin cancer 13. in an inconvenient truth, the most likely reason that are three uses that heading “a silent alarm” is to a. use an image that all readers can visualize b. show there is a problem that many do not know about c. to bore the reader d. frighten readers so that they will take action