Across
- 3. cutting down trees
- 5. worn away by natural forces
- 7. mushrooms
- 8. keep something from harm
- 9. support or oppose something
- 11. animals in an environment
- 12. plants in an environment
Down
- 1. protection of plants or animals
- 2. things that exist in an environment
- 4. how plants make food
- 6. not using up or destroying something
- 10. a large flat area with few trees