Across
- 3. a signal that organisms react to
- 7. proposed scientific explanation
- 9. factor that can change in an experiment
- 10. series of steps used to solve problems
- 14. controlled test to test a hypothesis
- 16. all the chemical reactions in an organism
- 17. the variable that is measured or observed
- 20. group that has no change in variables; used as a standard
- 21. organism with more than one cell
- 22. change that involves getting larger
- 23. change over time
- 24. direct method of gathering information in an orderly way
Down
- 1. process that seeks to maintain stable internal conditions
- 2. a logical conclusion
- 4. an explanation that has been supported by a vast amount of evidence
- 5. organism with one cell
- 6. change that involves stages
- 8. illustrates a relationship between variables
- 11. the variable that is controlled by experimenter
- 12. molecule used to store genetic information
- 13. the scientific study of life
- 15. information gathered in an experiment
- 18. group that has a change in variables
- 19. reproduction that requires only one parent