There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
Megazostrodon, the first known mammal of the Triassic period.
Intelligence and Education
World Population Growth, 1750-2150
Embryonic Period
Embryonic Period
If 0.40 mol of NaN3 reacts completely in the reaction shown below, then ________ L of N2 will ...