QUES: From the 1950s on, many areas of the Great Plains have become productive crop-growing areas because of extensive irrigation on large landholdings. The United States is a major exporter of agricultural products. The southern portion of the Great Plains lies over the Ogallala Aquifer, a huge underground layer of water-bearing strata dating from the last ice age. Center pivot irrigation is used extensively in drier sections of the Great Plains, resulting in aquifer depletion at a rate that is greater than the ground's ability to recharge.
what type of irrigation is used in the great plains?

ANS: Center pivot irrigation

QUES: In addition to Seurat, the roots of cubism are to be found in the two distinct tendencies of Cezanne's later work: first his breaking of the painted surface into small multifaceted areas of paint, thereby emphasizing the plural viewpoint given by binocular vision, and second his interest in the simplification of natural forms into cylinders, spheres, and cones. However, the cubists explored this concept further than Cezanne. They represented all the surfaces of depicted objects in a single picture plane, as if the objects had all their faces visible at the same time. This new kind of depiction revolutionized the way objects could be visualized in painting and art.
Cubism revolutionized the way things could not be seen in art how?

ANS: unanswerable

QUES: About 98% of Antarctica is covered by the Antarctic ice sheet, a sheet of ice averaging at least 1.6 km (1.0 mi) thick. The continent has about 90% of the world's ice (and thereby about 70% of the world's fresh water). If all of this ice were melted, sea levels would rise about 60 m (200 ft). In most of the interior of the continent, precipitation is very low, down to 20 mm (0.8 in) per year; in a few "blue ice" areas precipitation is lower than mass loss by sublimation and so the local mass balance is negative. In the dry valleys, the same effect occurs over a rock base, leading to a desiccated landscape.
How much of Earth's ice is in Antarctica?

ANS: 90%

QUES: As the Communist Party was outlawed in Yugoslavia starting on 30 December 1920, Josip Broz took on many assumed names during his activity within the Party, including "Rudi", "Walter", and "Tito." Broz himself explains:
Starting in what year was the Communist Party outlawed in Yugoslavia?

ANS:
1920