Across
- 1. plants using sunlight to make food
- 7. the total weight of organisms
- 9. shifting of plate tectonics
- 10. generating electricity from flowing water
- 12. the process of earth materials being worn away
- 13. supply of water to help grow crops
- 14. reducing severity
Down
- 2. interaction between two different organisms
- 3. the variety of life in an ecosystem
- 4. the weather conditions in an area
- 5. causing damage to farmland
- 6. clearing a wide area of trees
- 8. eruption of molten rock from the inside of the earth to the surface
- 11. fertile land becomes dry