Choose the best option to fill in the blank. (Chọn đáp án đúng nhất để điền vào chỗ trống.) 1. Soil pollution _________ many bad effects on ecosystems and human life. A. does B. causes C. makes D. All are correct 2. Many plants and animals die because of __________. A. noise pollution B. environment C. deforestation D. A and B are correct 3. The air in this city is __________ by emissions from nearby factories. A. exchanged B. reduced C. polluted D. All are correct 4. The __________ of water pollution is the death of many types of fishes. A. cause B. effect C. reason D. solution 5. Rising sea level can make some cities __________. A. pollute B. exchange C. appear D. disappear 6. Protecting the __________environment is saving human life. A. natural B. polluted C. working D. All are correct