Across
- 4. a decrease or reduction
- 7. the amount of water in the air
- 8. in a straight line
- 11. an idea not based on physical things
- 15. the study of shapes and space
- 16. the leaves of plants and trees
- 17. cutting down many trees
- 18. the top layer of trees in a forest
Down
- 1. sizes or amounts of something
- 2. a group of similar living things
- 3. a forest with a lot of rain and many plants and animals
- 5. the visible features of an area (land, hills, etc.)
- 6. to use something in a harmful or unfair way
- 9. water that falls from the sky (rain, snow, etc.)
- 10. not changed or affected by people
- 12. supplying water to plants or crops
- 13. useful materials like water, trees, or minerals
- 14. different levels or parts on top of each other