There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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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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The average adult has about 21 square feet of skin.
A true albino squirrel. Note the pink eyes.
True-color image of layers of haze in Titan's atmosphere.
Which is TRUE about the alternation of generations cycle that is diagramed above?
Sampling Issues
Anterosuperior view of true pelvis (blue)
Chorionic villus sampling (left) and amniocentesis (right)