Amazing World 2

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Across
  1. 1. hit Newton on his head
  2. 5. grows on moist bread
  3. 7. planet closes to the sun
  4. 9. Singapore icon
  5. 13. air passageway lined with fine hairs to trap impurities of inhaled air
  6. 16. tiny disc that contain a green pigment called chlorophyll
  7. 17. the main source of energy
  8. 18. have a break, have a ________
  9. 19. water carry tubes in plants
  10. 20. In the day the heat from the Sun causes water from rivers, streams, ponds and seas to __________
  11. 22. a bird that cannot fly
  12. 23. protects the heart and lungs
Down
  1. 2. food carrying tubes in plants
  2. 3. a bird hatches from it
  3. 4. Man's best friend
  4. 6. type of energy stored in batteries
  5. 8. can appear after rain
  6. 10. present in both animal and plant cell
  7. 11. striking change of form or structure in an animal after hatching or birth
  8. 12. growth of a new plant from a seed
  9. 14. natural homes of animals
  10. 15. opening on underside of leaves used for respiration
  11. 16. Likes to chase mice
  12. 21. blood vessels that carry blood away from the heart to other parts of the body