Vocabulary exercise

Click on the numbers, then enter your answers in the boxes that appear. The clues are listed at the bottom of the page. Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter.

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Go Green! Online ESL Course by Elizabeth Lavolette is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License.
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Across:

1. Ten years.
5. Become extinct (two words, no space).
6. Save (energy).
7.

A green living thing.
9. Home.
13. Pace; how often something happens.
14. The dodo is an ________ bird.
16. A gas that protects the Earth.
18. Because we all live in one house, we all _________ each other.
19. CO2. (Two words, no space)
20. Affect.
21. An animal like a dog, cat, human, or whale.
22. The air around the Earth.

Down:

2. Use. (noun)
3.

The planet where we live.
4. How hot it is.

8. Go faster.
10. Make ocean, land, or air dirty.
11. The number of people who live in a place.
12. Something you can use.
15. Everything around us, like trees, animals, water, and air.
17. Every year.