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Author Question: What does the biological species concept use as the primary criterion for determ (Read 1539 times) |
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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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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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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.