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Author Question: When economists speak of marginal, they mean a. Opportunity b. Scarcity c. Incremental d. ... (Read 24 times) |
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).
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.