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Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

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

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Everyone has one nostril that is larger than the other.

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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

A feral horse herd in the western United States A feral horse herd in the western United States
When the United States gets stuck over a controversial issue—usually something a divided Congress ca When the United States gets stuck over a controversial issue—usually something a divided Congress ca
Andrea Bowers, United States v. Tim DeChristopher. Andrea Bowers, United States v. Tim DeChristopher.
An example of the sometimes drastic differences in placarding regulations in the United States ... An example of the sometimes drastic differences in placarding regulations in the United States ...
What's the Difference Between England, Great Britain, and United Kingdom? What's the Difference Between England, Great Britain, and United Kingdom?
Regulatory effects of the vascular endothelium in normal and pathologic states Regulatory effects of the vascular endothelium in normal and pathologic states
Video: Mendel's pea plant, Pisum sativum experimental

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