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Author Question: In fourth-grade science, students are studying the use of simple machines. The teacher notices ... (Read 192 times) |
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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 word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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There are 60,000 miles of blood vessels in every adult human.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.