Hi there! I just finished studying the human body and so I can tell you with confidence that the Respiratory System is responsible for the exchange of oxygen and carbon dioxide. If you need more proof, the word Respiration itself<span> means</span> the action of breathing.
Why is the pulmonary circulation reduced in the human fetus? Pulmonary circulation is reduced in the human fetus because the baby gets its oxygen from its mother and does not breath on its own.
Answer:
I think it's glucose because our bodies digest the food we eat by mixing it with fluids in the stomach. When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose.
Therefore, I think it's glucose; however, I'm not sure.
Hope this helps!
