Across
- 4. Microscopic single-celled organisms?
- 8. Flow of electric charge through a conductor?
- 10. Essential macromolecule made of amino acids?
- 11. Process plants use to make glucose using sunlight?
- 13. Measure of electric potential in a circuit?
- 15. Force pulling objects toward Earth’s center?
Down
- 1. Green pigment vital for photosynthesis?
- 2. Instrument for checking temperature?
- 3. Force that slows down motion between surfaces?
- 5. Cell structure containing DNA?
- 6. Element necessary for respiration?
- 7. Device used to observe distant objects in space?
- 9. Cell that carries signals in the nervous system?
- 12. Smallest unit of a chemical element?
- 14. Phase change from liquid to gas?