Across
- 2. species formed from chemical reactions
- 4. long term relation between different things
- 8. the process of breathing
- 14. living thing
- 16. an behavior an animal has or does to survive
- 18. an animal that eats plants
- 19. restricting the size of a population
- 21. an interacting group of various pieces in a location
- 22. a animal that eats plants and animals
- 23. both organisms benefit from each other.
- 24. a animal that cannot make its own food
Down
- 1. a system that includes all living organisms
- 3. starting materials for a chemical reaction
- 5. maximum population size of the pieces in a environment
- 6. it is the number of organisms of the same species that live in a particular area
- 7. the process in which plants make food
- 9. a animal that eats meat
- 10. when one organism benefits from the other and the other is harmed in the process
- 11. a nonliving thing
- 12. animals that consume dead organisms that have died other than predation
- 13. live in previously damaged ecosystems.
- 15. animal that makes its own food
- 17. a flow of energy from one to another
- 20. group of animals that can reproduce with one another