The answer is: 13) B 14) C 15) A
Answer:
By not eating things that are not lactose free
Explanation:
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<span>Bacteria that cause a urinary tract infection (UTI) make an enzyme that changes urinary nitrates to nitrites. Nitrites in urine show a UTI is present. Leukocyte esterase (WBC esterase). Leukocyte esterase shows leukocytes (white blood cells [WBCs]) in the urine.</span>
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Nervous control, renal regulation, and chemical controls.