Across
- 2. humans breathe this from air
- 3. A male cow is called
- 5. Star which shines during the day
- 8. Medicine that is given to fight bacteria
- 10. closest planet to the sun
- 13. Organ covering the entire body
- 16. bending of light through a glass prism
- 18. single piece of DNA
- 20. the strongest sense of dog
- 21. group of animals having scales
Down
- 1. lightest element in the periodic table
- 4. What part of the body helps you move?
- 6. Power House of a cell
- 7. Earth's only natural satellite
- 9. muscle-building nutrient
- 11. animals eating flesh are called
- 12. part of the plant responsible for photosynthesis
- 14. Energy coming from motion
- 15. material with the highest transparency
- 17. frog's young one
- 19. largest land animal