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Across 1. Food ___, sequence of organisms 6. one benefits, one harmed 8. bottom level on the tropic pyramid 10. both benefit 11. struggling to obtain resources 13. ______ factors, non-living 18. can eat anything on the tropic pyramid 19. Ex: Freshwater, Forest, Grassland 21. producer 22. All organisms within an ecosystem 24. Sphere of life

Down 2. consumer 3. on the tropic pyramid organisms eat what it _____ them 4. ______ Matter, never alive 5. species with close relationship 6. Total number of a species 7. one benefits, one unaffected 9. survival advantage change 12. Study of organisms interacting with each other 14. _______ factors, living 15. Organisms interact with each other here 16. decomposer 17. Food ___, complex diagram 20. _______ Matter, alive 23. __% of energy moves up on the energy pyramid every level