The Respiratory System

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Across
  1. 4. System of the body that is in control of your breathing.
  2. 6. What you breathe out.
  3. 7. The air you breathe in.
  4. 8. Complete oxygen loss within the body.
Down
  1. 1. Main organs of the Respiratory System.
  2. 2. Things that die when there is no oxygen production.
  3. 3. Decrease in oxygen levels throughout the body.
  4. 5. Things that perform the action of carrying oxygen throughout the body.