Help with science. Please make sure answers are numbered.

Directions: For each question, present the answer in complete sentences with supporting information from the Lesson. Do not copy and paste from the Lessons or Internet resources, but answer in your own words to demonstrate understanding of the material. 1. Identify causes of outdoor air pollution. 2. What is acid rain? What causes it, and what are its effects? 3. Describe the natural greenhouse effect. 4. Create a public service announcement about indoor air pollution. Focus on practical tips for improving the quality of indoor air. 5. Explain how human actions contribute to the greenhouse effect and global climate change. 6. Acid rain from air pollution can pollute bodies of water. a. What are some other causes of water pollution? b. How does water pollution affect living things? 7. What is a dead zone? How does it develop? 8. What are wetlands? How do they reduce water pollution? 9. Define thermal pollution, and state when it occurs. 10. After a month of heavy rain, a formerly clear pond on a golf course is covered with slimy green algae. What do you think happened? 11. Compare and contrast point-source and nonpoint-source water pollution. Which type of pollution do you think would be easier to control? 12. Explain the process of ocean acidification. Why does it threaten the survival of many aquatic organisms? 13. Water is one of our most important natural resources. a. What is a natural resource? Besides water, what are some other examples of natural resources? b. What is the difference between renewable and nonrenewable natural resources? 14. What is a natural resource? 15. List two cons of using fossil fuels for energy. 16. Describe three renewable energy resources. 17. Identify ways you could conserve natural resources in your own life. 18. New soil is always being formed, yet soil is considered to be a nonrenewable resource. Explain why. 19. Compare and contrast renewable and nonrenewable natural resources.