Answer each in no less than 320 words and include refer

Answer each in no less than 320 words and include reference links used for each.
1) Organisms have evolved physiologically and anatomically to adapt. How have their systems evolved to maximize their purpose of maintaining homeostasis and equilibrium? Explain.
2) Kidneys were the first organs to be successfully transplanted. Because a donor can live a normal life with only one kidney should a person be allowed to sell a kidney? Explain how a person can live with only one kidney and the ethics behind selling an organ. Helpful thought: Why would evolution allow for extra structures?
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