Across
- 2. Shows who eats who
- 4. Makes its own food
- 8. Trait that helps survival
- 12. How rocks change forms
- 14. that can be replaced
- 16. that cannot be replaced quickly
- 19. An organism’s role in its environment
- 20. Living and nonliving things together
Down
- 1. Large region with same climate and life
- 3. Place where an organism lives
- 5. Breaks down dead matter
- 6. Eats other organisms
- 7. Average weather over time
- 9. Day-to-day atmospheric conditions
- 10. All of one species in an area
- 11. Many connected food chains
- 13. All species in an area
- 15. Preserved remains of past life
- 17. Movement of water on Earth
- 18. Wearing away of land