The “big-five” approach to personality disorders is receiving recognition. It is now having a great amount of research supporting and being done on it. Further studies are being done for future references. This “Big Five” Theory of Personality Disorders describes all people with personality disorders under five supertraits. Part of this theory is to drop the use of personality disorder categories altogether.
Answer:
Rivers change the surface of the earth. They are the agents of erosion, deposition and transportation. When rivers flow, they erode the rock with them and strong current pushes them. ... After cutting, they carry the stone, pebbles and other solid things and when the current is slow, they deposit the load on the land.
The four main elements of the human body are oxygen, hydrogen, carbon, and nitrogen.
The correct answer to this open question is the following.
Although the question is incomplete because you did not attach references to the lesson, we can say the following.
One Mesopotamian contribution that I think had the biggest impact on human history was the development of agriculture techniques and the knowledge to know about the flooding of the Tigris and Euphrates Rivers, so Sumerians could use it for growing crops and to avoid some catastrophes.
The Sumerians were the oldest civilization on planet Earth. They settled in the middle of the above-mentioned Rivers in the Middle East region, modern-day Iraq. They developed great knowledge to built impressive buildings called Ziggurats and formed important city-states such as Uruk, Kish, Ur, and Lagash. Agriculture techniques were a big reason they could settle in these regions.
