Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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Your heart beats over 36 million times a year.
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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
Varicosis. (a) Varicose veins develop due to the failure of valves in the superficial veins of the l
Sexual Response Cycles
Physiological Stress Response (cont.)
The oxygen sensor provides a quick response at the stoichiometric air–fuel ratio of 14.7:1.