Across
- 2. well tested explanation
- 6. device that produces magnified images
- 8. fractionation cells are broken into pieces and separated
- 9. set of chemical reactions
- 10. use of one or more senses
- 13. Reproduction single parent reproduces by itself
- 16. Generation hypothesis stating life can come from nonliving matter
- 19. microscope microscope that focuses on beams of electrons
- 20. Reproduction two cells that produce first cell of a living organism
Down
- 1. a signal
- 3. System decimal system of measurement
- 4. possible explanation
- 5. organisms maintain stable internal environment
- 7. light microscope microscope that allows light to pass through a specimen
- 9. variable factor that purposely changes
- 11. science that seeks to understand living world
- 12. Experiment test of a single variable
- 14. Variable factors scientists want to observe which may change
- 15. logical interpretation
- 17. evidence to learn about the natural world
- 18. evidence