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Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.