11. The soil becomes ____________because of the use of so many pesticides and fertilizers. (CONTAMINATE) 12. ____________waste spills can contaminate groundwater. (INDUSTRY) 13. In many developing countries, water pollution is usually a leading cause of ___________.(DIE) 14. _______elements have been found in both ground and underground water sources.(POLLUTE) 15. Fish and many other animals are killed by ____________in their habitat. (POLLUTE) 16. A number of cleaning products contain ____________chemicals. (HARM) 17. Water samples collected at these villages were seriously _____with bacteria. (CONTAMINATE) 18. People believe that the __________water has brought cancer to the local residents.(POLLUTE) 19. Light pollution makes us ____________to see the stars in the sky. (ABLE) 20. Noise is considered as ____________ pollution. (ENVIRONMENT)

11. The soil becomes contaminated because of the use of so many pesticides and fertilizers. (CONTAMINATE)

12. Industrial waste spills can contaminate groundwater. (INDUSTRY)

13. In many developing countries, water pollution is usually a leading cause of death .(DIE)

14.Polluted elements have been found in both ground and underground water sources.(POLLUTE)

15. Fish and many other animals are killed by Pollutants in their habitat. (POLLUTE)

16. A number of cleaning products contain harmful chemicals. (HARM)

17. Water samples collected at these villages were seriously contamination with bacteria. (CONTAMINATE)

18. People believe that the polluted water has brought cancer to the local residents.(POLLUTE)

19. Light pollution makes us unable to see the stars in the sky. (ABLE)

20. Noise is considered as environmentail pollution. (ENVIRONMENT)

                                               HOK TỐT!