Unix was developed using a high-level programming language (C) instead of platform-specific assembly language, enabling its portability across multiple computer platforms.
The continental shelf is an underwater landmass which extends from a continent, resulting in an area of relatively shallow water known as a shelf sea.Much of the shelves were exposed during glacial periods and interglacial periods.The shelf surrounding an island is known as an insular shelf.The continental margin, between the continental shelf and the abyssal plain, comprises a steep continental slope followed by the flatter continental rise.Sediment from the continent above cascades down the slope and accumulates as a pile of sediment at the base of the slope, called the continental rise.he shelf surrounding an island is known as an insular shelf. The continental margin, between the continental shelf and the abyssal plain, comprises a steep continental slope followed by the flatter continental rise.
The mid-Atlantic Continental Slope is a steep, narrow area paralleling the shelf and extending from the shelf break to depths of about 2,000 m (6,600 feet).The upper slope has gradients ranging from 100 feet per mile to 400 feet per mile, and is incised by numerous submarine canyons.he Continental Shelf and a portion of the current Coastal Plain were underwater 120,000 years ago, when sea levels were 20-25 feet higher. At the start of the Wisconsin glacial stage, the Laurentide ice sheet grew, trapping water on land.