Across
- 5. What chemical process occurs in cells to release energy?
- 7. hardest substance on earth
- 8. SI unit of frequency is?
- 9. Instrument used to scatter white light into its constituent colours
- 10. smoking causes_________?
Down
- 1. longest cell in human body
- 2. It regulates the amount of light that enters the eye
- 3. Sound does not travel in_________
- 4. Which lens is used in magnifying glass
- 6. largest moon of saturn