Across 1. an organism in a food chain or food web that eats producers 4. organisms that start the soil-building process 5. similar organisms that can mate and reproduce offspring 6. seasonal movement of a population of animals from one area to another 9. the largest population that an environment can support at any given time 13. gradual changes that occur to the remaining soil after floods or fires is _________ succession 16. the variety of life 18. structure, trait, behavior in an organism that helps it survive in its environment 19. protective coloring that blends with the surrounding environment 20. organisms that eats secondary consumers 21. the part of earth that supports life 25. populations of different species 27. a place where an organism lives 28. all things in an area, living and non-living that interact 29. the classification of organisms into groups based on similarities 30. the living or once living parts of an environment 31. the study of many interactions between organisms and their environment

Down 2. organism that eats primary consumers 3. unique role an organism plays in an ecosystem 5. close relationship between two or more species 7. forces that control the growth of a population 8. occurs slowly over time 9. type of relationship in which one organism benefits and the other is unaffected 10. plant eating animal 11. organisms of the same species living in the same area 12. state of inactivity for certain animals, where they conserve energy 14. meating eating animal 15. a relationship between a parasite and host 17. removal of a forest 22. the type of succession that begins with rocks 23. animal that eats both meat and plants 24. the non-living part of the environment 26. the ability to copy or imitate another organism