SCIENCE CROSSWORD PUZZLE

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Across
  1. 2. Muscle that helps breathing (9 letters)
  2. 4. Flap covering windpipe while swallowing (10 letters)
  3. 6. Tube carrying air to lungs (7 letters)
  4. 7. Part of digestive system absorbing nutrients (14 letters)
  5. 9. Tiny air sacs in lungs (8 letters)
Down
  1. 1. First organ where food is chewed (5 letters)
  2. 3. Process by which plants synthesize their food(14 letters)
  3. 5. Organ that pumps blood (5 letters)
  4. 8. Organ producing bile (5 letters)
  5. 10. Pair of organs for respiration (5 letters)