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Author Question: Observations show that elements with atomic mass numbers divisible by 4 (such as oxygen-16, neon-20, ... (Read 115 times) |
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
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Excessive alcohol use costs the country approximately $235 billion every year.
The actions of Frzb and the Frizzled receptor protein show how embryonic development represents a ba
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