Approximately 500,000 babies are born each year in the United States to teenage mothers.
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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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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.
The pH of human blood ranges from 7.35 to 7.45.
Macaw or Human
Human Brain
Human Ubiquitin
Ramey's study, children from poverty-level families IQ experiment