The best and most correct answer among the choices provided by the question is the second choice "<span>It provided a sturdy foundation for homes. People had to control where it was deposited to ensure its supply."</span><span>
</span>Unlike Egypt, Mesopotamia<span> was inundated with a large amount of </span>silt<span>. This </span>silt<span> was a constant cause of problems in the man made irrigation systems.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
The correct answer is - groundwater.
The freshwater is represented with only 3% of the total water reserves on the planet. Further more, most of the freshwater is actually frozen in the ice caps and glaciers on the poles and their close proximity, and that water accounts for around 87%. The rivers and the lakes do provide freshwater, but they only account for 1% of the total freshwater reserves, not to mention the fact that big portion of them are heavily polluted and can not be used for drinking at all.
The groundwater though, is much less polluted, is easy to extract and to use, and it accounts for around 12% of the total freshwater reserves, which makes the prime candidate for usage.
The bering straight, the bridge between russia and alaska
hope this helped
~rosy67
Answer:
These areas are called as Biological Hotspots
Explanation:
- Most of the species near to extinction and vulnerable are those which are kept in bio hotspots, these hotspots er conservation areas and hence limited in numbers.
- These hotspots check the population of the species from being jeopardized in the future. These tend t provide a reserve or facility to keep endemic species in natural surroundings in a protective environment under the scanner of rangers and wildlife protectionists.
- Forests are themselves a type of reserve a protected area that helps the growth and development of these species on land and water and also check there reproductive capacity
- Maintenance of these hotspots is a must for a nation to preserve its wild heritage and keep balance with the biodiversity of the region.
The correct answer is - 2.1 cm per year.
In order to get to the result of how much the African plate has been moving annually over the last 100 million years, we should first turn the kilometers into centimeters:
1 m = 100 cm
1 km = 1,000 m
1,000 m = 100,000,000 cm
2,1 x 100,000,000 = 210,000,000 cm
We got to the result of 210 million cm of total movement. Now we have to divide the number of cm with the number of the years in which the plate has moved that much, which is 100 million:
210,000,000 / 100,000,000 = 2.1 cm
So we get a result of an average movement of 2.1 cm per year pf the African plate during the period of 100 million years.