Across
- 2. to collect and treat rubbish to produce useful material which can be used again
- 4. species animals or plants which may soon not exist
- 5. animals that already do not exist (they are dead)
- 7. monoxide poisonous gas
- 10. how do we call a big wave
Down
- 1. the process by which land changes into desert
- 3. whats the color of plastic can
- 6. whats the name of our planet
- 8. whats the color of paper can
- 9. spill it co ers of the surface of the sea