Across
- 3. The branch of biology that studies the relationships between organisms and their environments
- 4. The relationship between predator and prey
- 7. A relationship in which one organism benefits while the other is not harmed or benefited
- 9. The surrounding area of an organisms habitat
Down
- 1. Non-living components of an environment
- 2. The different levels in a food chain, web or pyramid
- 5. Living components of an environment
- 6. The main source of hydration for all organisms
- 8. A relationship between two organisms in which neither benefit of are harmed
- 9. Relying on external heat