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Across 3. the place where a species lives 7. a plant-eating animal 9. an organism that lives on or in a host from which it takes its food 10. an organism that uses the sun's energy to make its own food 13. all members of a species inhabting a given location 14. an animal that feeds on flesh 16. an organism that feeds on dead organic matter 17. the study of living things and their environments 18. takes energy from dead or living things 19. variety oflife in an ecosystem

Down 1. living factor 2. nonliving, sterile 4. an animal that is hunted and killed by another animal for food 5. populations of different species in a given area, interacting with each other 6. an organism that feeds upon the dead bodies of animals 8. a system containing a living community and its nonliving enviornment 11. an organinsm that makes its own food 12. organisms competing for food and reproduction 13. an animal that kills another organism for food 15. an oranism that consumes other organisms