Across
- 8. energy forms can be transformed into another form
- 9. number and variety of different species in an area
- 10. make their own food
- 13. different populations that live together
- 14. relationship between two species
- 15. both organisms benefit from relationship
- 18. Baxter's mom
- 19. feeds on other organisms, one benefits and other is harmed
- 20. number of individuals in an area of a spec size
- 21. anything naturally occurring in the environment that humans use
Down
- 1. release of energy from food without oxygen
- 2. the disappearance of all members of a species
- 3. many overlapping food chains in an ecosystem
- 4. process using sunlight to make food
- 5. best school in the world
- 6. diagram showing amount of energy in system
- 7. breaks down biotic waste and dead material
- 11. one organism benefits and other is neither helped nor harmed
- 12. living parts of environment
- 16. where an organism lives, grows, reproduces
- 17. practice of using less of a resource so it can last longer