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Across 1. the study of how living and nonliving things interact 6. the role an organism plays in a community 10. a meat eating animal that feeds on the remain of dead animals 12. clearing of forest land 17. the nonliving part of an ecosystem 18. all the individual species in one given area 20. the place where an organism naturally lives and grows 21. an unwanted change in the environment 22. an animal that hunts other animals for food

Down 2. an animal thateats both plants and animals 3. an organism that gets energy from the sun 4. an organism the eats another organism to get energy 5. the living parts of an ecosystem 7. a group in which organisms are divided based on similarities 8. an animal that is hunted for food 9. an animal that eats other animals 11. all the different populations in one given area 13. an animal that eats producers such as algae, grass and trees 14. the path of energy from one organism to another 15. get energy by breaking down nutrients in dead organisms 16. all the living and nonliving organisms in an environment 19. overlapping food chains in an ecosystem