1. Environmental pollution causes ...... to people's health.

2. We must respect nature or suffer the ........ .

3. Everyone should learn about using ............ resources responsibly.

4. The wildlife park was created to protect ..... species.

5. We should try to reduce our water ...... .

6. The cost of cleaning up toxic ....... is very high.

7. If we cut down these trees, we will destroy the natural ....... of the birds and animals that live in them.

8. What is the future of genetically ......... food? Will we accept or reject it?

9. We must find a better way to ...... of plastics because they cause environmental problems.

10. One of the major environmental ............ that needs to be considered is deforestation.

11. I can't stand seeing animals in ......... .

12. Global ......... is causing climate change.

13. We must investigate ........... energy.

14. Instead of throwing ............... paper and glass we can recycle them.

15. The new law will ........... effect in six months.

16. It's better for animals to live in the ..................... .

17. The ozone ........... forms a part of the upper atmosphere.

18. Wildlife is .............. threat in many parts of the world.

19. We can be affected negatively ............ noise pollution.

20. Governments need to look ......... ways to conserve natural resources.