Across
- 3. Liquid that transports substances such as oxygen and nutrients.
- 5. this made up the largest percentage in air
- 7. Process where plants make food
- 9. this is transported from roots to all parts of the plant
- 10. Organs that take in oxygen and remove carbon dioxide in humans.
- 11. Mostly found on underside of the leaves, allow loss of water
- 13. Organ that pumps blood around the body.
- 16. Process that gives us energy
Down
- 1. Waste gas produced during respiration.
- 2. Carry air from nose tolungs
- 4. This is transported from the leaves to all parts of the plant
- 6. Gas needed by cells for respiration.
- 8. Structures that allow fish to obtain oxygen from water.
- 12. Found in the lungs
- 14. All body ____ needs oxygen and digested food
- 15. this filters dust from inhaled air