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CO2 from the blood is released from the blood cells into the alveoli for exhalation while O2 from the alveoli is received into the blood cells to deliver oxygen to other parts of the body
<span>The release of breast milk that occurs when a mother hears a crying child is called the milk letdown reflex.</span>
The nutrient that provide 4 cal per gram that is needed to build and repair body tissue is Protein
