Answer:
6 is probably C and 7 is D
All of the above I believe
Answer:
The land was so fertile because of the big amounts of silt that the rivers brought to their shores.
Explanation:
The river valleys of Tigris and Euphrates in the Middle East, and the Nile in Northern Africa, were the places were the two earliest civilizations arose. These two civilizations were Sumer and ancient Egypt. The main reasons why these two civilizations developed were exactly the aforementioned rivers and their valleys.
Tigris and Euphrates on one side, and the Nile on another side, were bringing in enormous amounts of silt to their shores each year. The silt was making the river valleys highly fertile, which in turn meant that the people can engage in large scale agricultural production. Because the people had good conditions for the big production of agricultural goods their food supplies were guaranteed, so they were able to specialize in other fields and gradually develop into real civilizations.
<u>Answer:</u>
Scientific progress is when there is some advancement particularly in the field of science by collection of knowledge and this leads to more addition to this knowledge after this progress.
But when there is a lot of research in this matter, this leads to the formation of the law which states a fact but normally does not tell what and how does that phenomenon happen but only after a lot of research.
The answer is B: west to east
Weather can move in any direction. In the United States, weather most often moves west to east, because that is the direction the jet stream blows. The jet stream carries weather systems along with it.
Now, you may ask, why does the jet stream blow west to east?
The answer is complicated, but it happens as a result of the way the sun heats the equator more than the poles, and the speed with which the earth spins.
Hope this helps
