Across
- 2. Outer covering of a fish
- 5. Releasing pollutants into the environment
- 6. Organ that pumps liquid through the tubes
- 7. A plant that grows along the ground or hold onto a support
- 10. Plants make their food by a process called _________
- 11. 78% of air
- 13. Takes in oxygen to be used by the body
Down
- 1. Another word for oesophagus
- 3. Gas to liquid
- 4. In a plant cell but not an animal cell
- 8. Animals need to be able to move in order to find ______
- 9. A jelly-like substance in a cell
- 12. ______ is the ability to do work