No an object can not be made without some sources of nature
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.
The unsaturated zone is the area of the subsurface that is above the groundwater table. The pores of the soil and rock in this zone contain both air and water.
<h3>What is the water table?</h3>
The water table is the subsurface border between the unsaturated and saturated zones.
The water table is an underground border that separates the soil surface from the area where groundwater saturates crevices between sediments and rock fissures.
At this point, the pressures of water and air are equal.
The unsaturated zone is the soil surface above the water table, where both oxygen and water fill the crevices between particles.
Therefore Option C is correct as it is where a person will immediately reach after drilling a well through an unsaturated zone.
For more information about unsaturated zone refer to the link:
brainly.com/question/266778
Answer: 10 feet long
Explanation:
The white dashed lines that divide lanes on U.S roads is 10 feet. That happens to be the Federal guideline for every street, highway, and rural roads in the United States, on roads where dashed lines separate traffic lanes or indicate (zebra crossing)—where passing is allowed.
A. at the same time that Earth formed
Explanation:
Geologists think the earth's continents began to form about the same time the earth was formed.
Most of the rocks on the continental crust are about the oldest that been used to date the age of our planet.
- Oceanic plates are relatively very young as they are formed at spreading centers and destroyed at convergent margins.
- Continental masses have very high absolute ages.
- The oldest rock on earth such as the Kabala Gneiss have been dated to be about 3 billion years.
- Other rocks have yielded ages close to the formation of the earth.
- We can conclude that the continents began to form immediately after the earth was formed.
learn more:
Radiometric dating brainly.com/question/7022607
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