Answer:
b
Explanation:
The answer is B becuase "where do people buy tools is not a scientific question, and neither is C.
Answer:
Your kidneys also remove acid that is produced by the cells of your body and maintain a healthy balance of water, salts, and minerals—such as sodium, calcium, phosphorus, and potassium—in your blood. Without this balance, nerves, muscles, and other tissues in your body may not work normally.
