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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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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

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Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Many salmon spawning grounds, such as the Little Qualicum River in British Columbia, consist of wate Many salmon spawning grounds, such as the Little Qualicum River in British Columbia, consist of wate
Typical DSO survey in Celestia Typical DSO survey in Celestia
Muscle fibers consist of single, elongated, multinucleated cells that arise from the fusion Muscle fibers consist of single, elongated, multinucleated cells that arise from the fusion
National Sleep Foundation Survey Results National Sleep Foundation Survey Results
Video: Lipid digestion - mouth, stomach and small intestine

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