Answer:
Chain surveying is the type of surveying in which only linear measurements are made in the field. The main principle of chain surveying or chain triangulation is to provide a framework consist of a number of well-conditioned triangles or nearly equilateral triangles. It is used to find the area of the field.
Explanation:
C, because it is bounded to the west by the Black Sea
The Mongols, a tribe of Nomads from Central or North Asia, who were ruled by Genghis Khan at the time.
An El Niño<span> event changes the wind and water currents over the Pacific Ocean. The trade winds usually blow from east to west around the equator. ... The warm, western water makes for humid air and thus rainfall at that end of the ocean. During an </span>El Niño<span> event, this pattern breaks down.</span>
