Lesson 12 Review Questions 1. What gas is used and what gas is created during photosynthesis? What gas is used and what gas is created during respiration? 2. Describe two reasons why photosynthesis is important. 3. What important role do greenhouse gases play in the atmosphere? 4. Give an explanation of why warm air rises. 5. Describe ozone creation and loss in the ozone layer. Does one occur more than the other? 6. Give a complete description of these three categories of energy relative to each other in terms of their wavelengths and energy: infrared, visible light, and ultraviolet. 7. What is the difference between conduction and convection? 8. What is a planet's heat budget? Is Earth's heat budget balanced or not? 9. On a map of average annual temperature, why are the lower latitudes so much warmer than the higher latitudes? 10. Why is carbon dioxide the most important greenhouse gas?