Across
- 3. the force that is present when two things are in contact
- 8. process by which leaves make food
- 9. the process by with water turns to gas
- 12. the food pipe
- 13. sticky yellow layer of germs that forms on the teeth
- 14. the force that pulls things down
- 15. plant found in desert
- 16. the natural energy we get from sun
Down
- 1. the energy we get from water
- 2. _ is made up of small particles
- 4. the substance that give green colour to leaf
- 5. small living things that can only be seen with microscope
- 6. tiny openings in the leaf
- 7. the organ that produces juices for digestion process
- 9. the hardest substance in human body found in tooth
- 10. plants that grow in water
- 11. the process by which gas changes to liquid