Other processes of Life

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Across
  1. 3. It is the system which consists of the heart, blood vessels and blood cells.
  2. 5. It is a strong muscles with two sides.
  3. 6. It is located near the heart.
  4. 7. blood that contains oxygen
  5. 8. This protects the lungs
  6. 9. is the movement whereby air containing oxygen is inhaled, and air containing carbon dioxide is exhaled.
Down
  1. 1. the lungs is located above it.
  2. 2. blood that does not contain oxygen
  3. 4. is the process where oxygen is used to break down food to release energy
  4. 10. it acts as a filter when air enters the respiratory system