Across
- 3. The science studying the relationship between plants or animals and their environment.
- 7. The surrounding in which a person,plant or animal live.
- 9. H20
- 10. Use an item again.
- 12. A living being capable of voluntary movement.
Down
- 1. The top layer of the earth's surface.
- 2. Use less-use only what you need.
- 4. Use carefully, avoiding waste.
- 5. Getting bigger
- 6. A living organism that is not able to move itself.
- 8. Extract useful materials from garbage and waste.
- 11. The planet we live on- the only known planet where life exists