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