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Author Question: ________ are molecules on the outer surface of cells. (Read 45 times) |
Did you know?
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Did you know?
As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
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There are more sensory neurons in the tongue than in any other part of the body.
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Vaccines prevent between 2.5 and 4 million deaths every year.