Across
- 1. group in an experiment on which a test is performed
- 4. refers to aquatic environments in which water contains little in any salt
- 6. study of living things
- 9. stable internal condition of an organism
- 10. having to do with water
- 15. process in which cells produce ATP by combining nutrients with oxygen
- 16. active mainly during the day
- 17. conclusion based on reasoning from evidence
- 19. refers to land
- 20. plant life
- 22. science of classification
- 23. refers to environments in the seas and oceans which contain salt water
- 24. theory that has never been proven false
- 25. sensible explanation to a scientific problem
- 26. group in an experiment that lacks the independent variable and is used as a standard for comparison
- 27. facts, theory, way of explaining an object or event by using a set of facts
Down
- 2. area between the highest and lowest points that the tide reaches
- 3. place within an environment where an organism lives
- 5. everything surrounding an organism being studied
- 7. hot spring in the ocean floor
- 8. sum of all chemical processes of life
- 11. living in trees
- 12. active mainly at night
- 13. system that scientists use to pursue scientific knowledge
- 14. collections of salt water and sea life that could not escape when the tide went out
- 18. animal life
- 21. living thing