This achievement was irrigation; possibly the first in the world.
Irrigation refers to a system of water canals, usually from a river or another natural water source, that lead to farming fields that provide water to those fields, which they would otherwise not have (or not as much).
It is closely associated to absolute thresholds. Signal detection theory is used when psychologists want to measure the way we make decisions under conditions of uncertainty, where reasoning and decision making takes place during indecisive situation. One scientific example could be when an observer categorized something present or absent.
Answer: The eye
Explanation:
The dome of the water that builds up in the center of the hurricane is known as the eye. The eye of the hurricane is referred to as or known as region that tends to mostly have calm weather at center of a strong tropical hurricane. The eye of hurricane tends to have a circular area that is typically ranging from 30 to 65 kilometers in the diameter.
Bachelors degree
A bachelors is what people get after for years of college/university.