Biology

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Across
  1. 3. Human bone is made of the mineral
  2. 5. facial muscles are involved in speaking
  3. 7. Which star is visible during the day and sends
  4. 8. main organ of the cardiovascular system
  5. 9. What do you call the two nose holes
Down
  1. 1. standard unit is used to measure energy
  2. 2. How much blood is in the average human body
  3. 3. Where is the esophagus located
  4. 4. Which animal bears a fur
  5. 6. largest joint in the human body