Across
- 4. At pleasant temperature, rather than being hot or cold
- 5. To avoid wasting sth or using more than necessary
- 7. Put a seed into the ground so that it will grow there
- 9. The natural world in which people , animals and plants live
- 10. A large area of land that is thickly covered with trees
Down
- 1. Of plant to exist or develop to be bigger or better
- 2. Not dirty
- 3. To make sb/sth not harmed or damaged
- 6. To influence them or cause them to change in some way
- 8. The gas that surrounds the earth and that we breathe