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Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

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Thyroid conditions may make getting pregnant impossible.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

An overview of the process of primary and secondary growth in a woody stem. An overview of the process of primary and secondary growth in a woody stem.
Primary Groups: Families Primary Groups: Families
Primary Recovery of Oil Primary Recovery of Oil
The Four Primary Drug-Receptor Families The Four Primary Drug-Receptor Families
Primary material used for HEADERS Primary material used for HEADERS
One pathway of primary succession in Alaska’s Glacier Bay region. One pathway of primary succession in Alaska’s Glacier Bay region.
Video: Major Elements in Biological Molecules: Nucleic acids

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