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Author Question: What is a collective mark? What will be an ideal response? ... (Read 15 times) |
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.