Power Health-Sci!!

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Across
  1. 5. The main gas that humans breathe and need to survive
  2. 6. A condition where your body has less iron/healthy red blood cells
  3. 7. The largest bone in the body
Down
  1. 1. Important for making your bones strong
  2. 2. The largest organ in the human body
  3. 3. Adults have 206 ____ in their body
  4. 4. Pumps oxygen and nutrient-rich blood throughout the body
  5. 7. The heart has ____ chambers