3. Using a lot of fertilizers can reduce soil ___________. A. contamination B. deforestation C. agriculture D. fertility 4. We are largely responsible for climate change because our activities have ___________ large amounts of carbon dioxide and other greenhouse gases into the atmosphere. A. damaged B. consumed C. preserved D. released 9. Nowadays, we are facing many threats such as ___________, pollution, global warming, and fossil fuel depletion. A. preservation B. ecosystem C. confusion D. deforestation 14. They have no way to _________ of the hazardous waste they produce. A. dispose B. deforest C. deplete D. destroy 18. The oil spill which is not handled in time will eventually _______ the coastline. A. consume B. fertilize C. release D. damage 19. Experts are predicting that the sea _______ will rise, flooding many low-lying areas. A. fuel B. level C. impact D. threat