Stem cells can specialize into any type of cell in the body
Answer:
There is no mixing of oxygen-rich and oxygen-poor blood.
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The right atrium and right ventricle of the human heart pump oxygen-poor blood to the lungs and the left atrium receives oxygen-rich blood. They never mix.
The secret of an endocrine gland that is transmitter by the blood to the tissue travel through the body .
Unlike freshwater fish, saltwater fish <span>often contain a lower concentration of salt than the water they live in.
so your answer is </span><span>A. often contain a lower concentration of salt than the water they live in.
hope that helps!!!!!</span>
<span>In the closed awareness context, patients do not know if they are going to die because the doctor and staff deliberately keep the information from them."</span>
