Across
- 3. well-tested explanation that unifies a broad range of observations and hypotheses
- 5. particular preference or point of view that is personal rather than scientific
- 7. a logical interpretation based on prior knowledge and experience
- 8. experiment in which only one variable is changed
- 10. evidence
- 12. possible explanation for a set of observations
- 13. variable that is observed and that changes in response to the independent variable; also called the responding variable
- 15. genetic material that organisms inherit from their parents
- 16. scientific study of life
- 17. signal to which an organism responds
Down
- 1. factor in a controlled experiment that is deliberately changed
- 2. the combination of chemical reactions through which an organism builds up or breaks down materials
- 4. process of noticing and describing events or processes
- 6. reproduction involving a single parent
- 9. group in an experiment that is exposed to the same conditions as the experimental group except for one independent variable
- 11. relatively constant internal physical and chemical conditions that organisms maintain
- 14. Change over time
- 18. type of reproduction in which cells from two parents unite to form the first cell of a new organism