Depo Provera is considered a very effective method of birth control. If taken every thirteen weeks, it is estimated to be 99% effective. It does not, however, protect a woman from STDs. Studies indicate that women on Depo have a decreased risk of ovarian cancer, Pelvic Inflammatory Disease, and Endometrial Cancer.
The Orinoco is one of the longest rivers in South America at 2,140 kilometres (1,330 mi). Its drainage basin, sometimes called the Orinoquia, covers 880,000 square kilometres (340,000 sq mi), with 76.3 percent of it in Venezuela and the remainder in Colombia.
North Carolina's Coastal Plain is low, flat land along the Atlantic Ocean. It is often divided into two parts - the Outer Coastal Plain and the Inner Coastal Plain. The Outer Coastal Plain is made up of the Outer Banks and the Tidewater region.