The answer is small intestine
Answer:
B because aveoli are part of the lung Branch and capillaries take in the oxygen with blood?
Explanation: my guess since carbon dioxide also needs to be excreted out of lungs.
Organism and organ system
The answer is Hypothyroidism. This is caused by a faulty thyroid gland that is under active. This means it produce less thyroid hormone that is important in metabolism. Consequently, one is unable to regulate body temperatures, and production of proteins. Hypothyroidism can also predispose one to diabetes, and heart attacks.
