The red blood cells bring oxygen to them and the lungs expel the carbon dioxide
Answer:
If a person had a effective medical treatment that person would most likely be disabled and would need someone to provide help daily, so most doctors would prescribe medical help people that are trained to take care of a person after a surgery.
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Explanation:
None really unless you are talking about an animal
The answer is demanding and responsive because they need to get in touch with in cause of an emergency