was initially thought to play a minor role in the greenhouse effect, but now it is much more important due to its absorption of CO2. O Ozone O Nitrous Oxide O Methane O Water Vapor QUESTION 6 An overall 1 degree Celsius increase in temperature over the norm would lead to a 10 percent decrease in corn, wheat, and rice yields. O True O False QUESTION 7 In this region, tropical forest will be replaced by savannah due to increased temperatures and decreased soil water. O Africa O Latin America O Europe O Asia QUESTION 8 One success story of 'tragedy of the commons' is the collective regulation to govern the ozone layer. The world has actually shrunk the hole in the ozone.