Biology.

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Across
  1. 1. disease in which you become dangerously thin.
  2. 2. a chemical that is used for growth and repair.
  3. 3. breathing out.
  4. 6. breaks food into small soluble forces.
  5. 7. drug that causes memory loss.
  6. 9. a part of the body where bones are moved by the muscle.
Down
  1. 1. medicine which kills bacteria but not virus.
  2. 4. a vessel that carries blood away from the heart.
  3. 5. nutrient or a main source of energy.
  4. 8. a nerve cell