Arainshadow desert forms a rainshadow desert forms in places where mountain ranges act as barriers to the movement of water vapor in cold, polar regions near the equator, where moist air rises (because it is hot and less dense) up, away from earth's surface when dry air descends from high in the atmosphere between 20° and 30° latitude

The answer is a rainshadow desert forms in places wherein mountain ranges acts as barriers to the movement of water vapor. A rain shadow is a patch of land or part of land, mostly seen in mountain ranges, because it has been forced to look like a desert, because the mountain range blocks plants growing and rainfall as well. One side of the mountain, precipitation is absorbed, so as snow, while the other side of the mountain or the desert side, blocks the precipitation.

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor:

Ibelieve the answer is c also i'm in k12 too