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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

A human pedigree containing inbreeding. A human pedigree containing inbreeding.
Extinction and immigration of bird species on the California Channel Islands between 1917 and 1968 ( Extinction and immigration of bird species on the California Channel Islands between 1917 and 1968 (
The Dugong is an endangered species; the largest remaining population is found in Australian waters The Dugong is an endangered species; the largest remaining population is found in Australian waters
The human olfactory system. The human olfactory system.
Partial map of disease genes on human chromosome 21 Partial map of disease genes on human chromosome 21
Components of Human Blood Components of Human Blood
Video: Osmosis - water transport

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