<span>a. fever and dehydration increase body temperature and fluids, which decrease a person's heart rate and respiration.</span>
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White blood cells are an important component of your blood system, which is also made up of red blood cells, platelets, and plasma.
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Although your white blood cells account for only about 1% of your blood, their impact is significant. White blood cells, also called leukocytes, are essential for good health and protection against illness and disease.
