ADHD begins in childhood and often lasts into adulthood. As many as 2 out of every 3 children with ADHD continue to have symptoms as adults. Symptoms of ADHD can differ from person to person, but there are three basic types of ADHD. Each one is identified by the symptoms of hyperactivity, impulsivity, and inattention.
Convert acre-feet to other major units of volume. A unit used to measure volumes of water, typically for use in irrigation. One acre-foot is the amount of water that would cover an acre of land to a depth of 1 foot, = 43,560 cubic feet, approximately 325,851 U.S. gallons (approximately 1233.48 cubic meters).
a unit of volume used to measure the capacity of reservoirs. One acre foot is a volume one foot deep covering an area of one acre. Thus an acre foot contains exactly 43 560 cubic feet, about 325 851.4 U.S. gallons, or about 1233.482 cubic meters (0.123 348 hectare meter).