Minimum contacts. Minimum contacts is a term used in the United States law of civil procedure to determine when it is appropriate for a court in one state to assert personal jurisdiction over a defendant from another state.
Under ideal conditions, oak trees live an average of 150 years, with short-lived varieties lasting 50 to 60 years and long-lived varieties living more than 150 years.
STEP 4. Divide the radius (r) by the average width (w) of one annual growth ring toget the approximate age of the tree.r/w = approximate age24 inches/.2 inches per year = 120 years!An age of 120 is relatively young for a white oak. Under perfect conditions, a white oaktree can live to be 300 or more years old.