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Did you know?
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
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There are approximately 3 million unintended pregnancies in the United States each year.
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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.
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The average adult has about 21 square feet of skin.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.