Across
- 1. of or relating to living organisms
- 4. when one organism benefits from another without damaging it
- 8. an organism that feeds on complex organic substances
- 9. an animal or plant that lives in or on a host
- 12. the act of preying by an animal that kills and eats the prey
- 13. an animal that feeds on both animal and vegetable substances
- 17. of organisms where each member is eaten by another
- 18. major ecological community with distinct climate and flora
- 19. any substance that can be metabolized to give energy
- 20. the area in which something exists or lives
Down
- 2. a terrestrial or aquatic flesh-eating mammal
- 3. study of the relations of organisms to their environment
- 5. the relation between two organisms that benefit each other
- 6. a group of organisms of the same species inhabiting an area
- 7. any animal that feeds chiefly on grass and other plants
- 10. community of organisms with several interrelated food chains
- 11. break down
- 12. someone who manufactures something
- 14. group of interdependent organisms living in the same region
- 15. an organism capable of synthesizing its own food
- 16. the variety of plant and animal life in a habitat