Across
- 3. Eats both plants and animals
- 5. The non-living parts of an environment
- 7. Any relationship where two or more species live closely together
- 9. Amount of matter in an object
- 12. One organism benefits while the other is not helped nor harmed
- 13. All the living parts of an environment
- 16. The process of objectively establishing facts through testing and experimentation
- 19. Model that shows all possible feeding relationships at each trophic level
- 20. Standard for comparison
Down
- 1. When there is no soil and just rock a pioneer species has to create life their
- 2. The factor that doesn't vary in any experiment
- 4. Shows how energy is moved through the ecosystem though a series of steps
- 6. One organism benefits while the other is harmed by it
- 8. The amount of space occupied by an object
- 10. When there is already soil present and the ecosystem restarts
- 11. The ability for things to survive the change in their environment
- 14. All strategies and adaptations a species uses in its environment
- 15. Both species benefit from the relationship
- 17. Eats only animals
- 18. Eats only plants