The average age range is 47 to 55 years. Those who start menopause before age 45 are considered to have early menopause, while those who begin before age 40 are said to have premature menopause. The entire transition takes between four and five years, and during this time women can still get pregnant.he average age range is 47 to 55 years. Those who start menopause before age 45 are considered to have early menopause, while those who begin before age 40 are said to have premature menopause. The entire transition takes between four and five years, and during this time women can still get pregnant.
Submit. American woody plant expert Dr. Michael Dirr of the University of Georgia says that the burr oak (Quercus macrocarpa) is adaptable to many types of soil that do not flood.ubmit. American woody plant expert Dr. Michael Dirr of the University of Georgia says that the burr oak (Quercus macrocarpa) is adaptable to many types of soil that do not flood.
Because of its fire and drought resistance, bur oak is the most common tree on oak savannahs along the prairie-forest transition zone in Wisconsin and Minnesota. Bur oak wood is commercially valuable for sawlogs and veneer, although high quality timber is not common. Their acorns are a prime food for squirrels, wood ducks, white-tailed deer, and small mammals. Bur oak is one of the most drought resistant North American oaks. On uplands it often is associated with soils of limestone or sandstone origin. It is found on droughty sandy plains, black prairie loams, and on loamy slopes of south and west exposure.