2nd yr Science

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Across
  1. 2. blood cells that fight infection
  2. 3. a tiny living things is called a..
  3. 7. the scientific name for the windpipe
  4. 8. the gas produced when plants make their own food
  5. 9. sugar needed for respiration
  6. 10. blood vessel that carries blood away from heart
  7. 12. wall of the heart
  8. 14. the air sacs where gas exchange takes place
  9. 15. cannot be killed with antibiotics
  10. 16. these bones protect the heart and lungs
Down
  1. 1. the green chemical in leaves
  2. 4. clot the blood
  3. 5. plants use this gas to make their own food
  4. 6. the way plants make their own food
  5. 11. process used by cells to make energy
  6. 13. ecoli is an infection caused by....