Across
- 3. plate boundary that forms mountains
- 4. dominant and recessive alleles are present
- 7. variable that remains the same in the experiment
- 10. the visible light spectrum
- 11. variable I measure in an experiment
- 13. variable I change in an experiment
- 14. found only in a plant cell
- 17. one parent, two identical daughter cells
- 19. transfers energy
Down
- 1. system that exchanges O2 & CO2 in the body
- 2. light and water waves
- 5. sound waves
- 6. crust and mantle of the Earth
- 8. two parents, four unique cells
- 9. explains how and why
- 12. balance between inside and outside of a cell
- 15. moves from hot to cold
- 16. males are squares, females are circles
- 18. describes what happens