High blood pressure, also called hypertension, is more common in adults, but it can happen at any age. Learn what it is, how to prevent it, and how to treat it.
The 2016 Jordan Valley, Oregon, population is 174. There are 84 people per square mile (population density).
The graph shows the population of the Valley of Mexico expanding from fewer than 5,000 inhabitants 3,500 years ago to some 1-1.2 million in 1519. Three long cycles of growth stand out3500-2100 BP, 1850-1250 BP, and 850-500 BP, punctuated by two periods of decay2100-1850 BP and 1250-850 BP.