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Author Question: Charles Darwin a. grew up in modest circumstances. b. began to doubt the fixity of species ... (Read 115 times) |
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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.