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Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.