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Author Question: A 5.0-kg mass sits on the floor of an elevator that has a downward acceleration of 1.0 m/s2. On top ... (Read 5011 times) |
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
There are more sensory neurons in the tongue than in any other part of the body.
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.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.