Across
- 3. takes place on land where there are no living organisms
- 4. all the living organisms in an environment
- 6. one organism benefits and the other is neither helped or harmed
- 8. any relationship in which 2 species live closely together
- 12. pattern of changes that takes place after an existing community is destroyed
- 14. study of the interactions among organisms and their environment
- 15. has low salt concentration- usually less than 1%
- 16. large group of ecosystems that shares the same type of climax community
- 17. the non-living parts of the environment
- 20. an organized set of investigation procedures used by scientists
- 22. organisms that seek out and eat other organisms
- 26. y-axis
- 27. the study of life: also known as life science
Down
- 1. organisms that are eaten
- 2. anything that limits an organisms ability to live in a particular environment
- 5. the process of grdual, natural, change and species replacement that takes place in the communities of an ecosystem over time
- 7. things that have all the characteristics of life made of one or more cells
- 9. educated guess or testable prediction
- 10. x-axis
- 11. all strategies and adaptation a species uses in it's environment
- 13. a stable community formes after primary or secondary succession once little or no change occurs
- 17. organisms that use sunlight or energy stored in chemical compounds to make food because they make their food- producers
- 18. process that uses observation and investigation to gain knowledge about events in nature
- 19. organisms that rely on other organisms for their energy and food supply;also called consumers
- 21. the ability of living things to survive the changes in the environment
- 23. cover about 3/4 of earths surface and includes oceans, coral reefs, and estuaries
- 24. both species benefit from each other
- 25. one organism lives on or in organism and harms it