Respuesta :
One change in the composition of the blood as it flows through the respiratory and circulatory systems is oxygen levels in the blood.
What is the circulatory system?
The circulatory system is a group of organs whose functions include to transport oxygenated blood to all cells.
- The circulatory system contains red blood cells consisting of a protein called hemoglobin that binds to oxygen.
In conclusion, one change in the composition of the blood as it flows through the respiratory and circulatory systems is oxygen levels in the blood.
Learn more about the circulatory system here:
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