Across
- 2. This force is always acting upon us...
- 4. A system of the environment and its organisms
- 6. Atomic mass of 108
- 8. From solid to liquid
- 9. Organ of the digestive system that produces enzymes
- 12. Measurement of the length of a wave
- 15. Low on the pH scale
- 16. An apple fell on his head
- 18. Negative charges in an atom
- 19. Atomic number of 20
Down
- 1. The process of cell division
- 3. Unit of measurement for temperature (SI)
- 5. The powerhouse of the cell!
- 7. What happens when too equal charges get near each other
- 10. Coldest planet in the solar system
- 11. The ability to reflect sunlight
- 13. Device to measure current in a circuit
- 14. Living organisms
- 17. The unit of energy