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Author Question: The skin layer that functions as a physical barrier to light and heat waves is the stratum ____. a. ... (Read 229 times) |
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.
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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.