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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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In 1864, the first barbiturate (barbituric acid) was synthesized.

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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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There are more bacteria in your mouth than there are people in the world.

The relative influence of heredity and the environment in human behavior has fascinated and plagued ... The relative influence of heredity and the environment in human behavior has fascinated and plagued ...
Providing structure and organization in the child’s environment may aid the development of ... Providing structure and organization in the child’s environment may aid the development of ...
Environment of tRNAs at the ribosome as determined by cross-linking Environment of tRNAs at the ribosome as determined by cross-linking
Human impacts and the built environment Human impacts and the built environment
Two Cnidarian Body Plans Two Cnidarian Body Plans
Video: Spermatogenesis Animation

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