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.
Most, however, have one thing in common: they grow best with a fairly low pH. Some may be able to tolerate neutral or near-neutral conditions, while others -- like the pin oak -- grow exclusively in acidic soil. High pH in the soil around oak trees typically leads to a condition known as chlorosis.ron Chlorosis. Chlorosis occurs when a plant lacks sufficient chlorophyll to carry out photosynthesis. One particular type -- known as iron chlorosis -- is often caused by iron deficiency due to high soil pH in the oak tree's soil. Chlorosis causes yellowing of the leaves.