Across
- 2. found in red blood cells
- 4. a microorganism similar to animal cell
- 6. a property shown by some metals
- 8. an organism that break down organic matter
- 11. an area with no particles
- 12. differences between members of the same species
- 16. unit of energy
- 18. examples are rain and snow
Down
- 1. negatively charged particles that flow in wires
- 3. a cloud of dust and gas in space
- 5. does not allow light to pass through
- 7. substances that you start with in a chemical reaction
- 9. able to dissolve skin
- 10. an animal that kills and eats other animals
- 13. device to measure current
- 14. feeding
- 15. the long extension in a neurone
- 17. rise and fall in ocean depth