respiration and circulation

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Across
  1. 5. (starts at A1 going down)
  2. 7. (starts at E3 going down)
  3. 8. (starts at B7 going down)
  4. 10. (starts at B5 going down)
Down
  1. 1. (starts at B1 going right)
  2. 2. (starts at F3 going right)
  3. 3. (starts at G6 going right)
  4. 4. (starts at H1 going right)
  5. 6. (starts at C1 going down)
  6. 9. (starts at D5 going right)