Across
- 2. use of waste materials to make something new
- 4. 1st of 3 Rs
- 5. grown without the use of human-made materials
- 9. a prefix for Earth
- 10. 71% of Earth is covered in this
- 11. turning off lights can help to conserve ___
Down
- 1. can be broken down and returned to the Earth over time
- 3. renewable energy source from plants and animals
- 4. a resource replaced naturally
- 6. a ___ faucet can waste water
- 7. organic matter used as fertiliser
- 8. popular colour on Earth Day
- 11. the first ___ day was celebrated on 22 April 1970