Answer:
The oldest rocks of the oceanic crust are found in deep ocean trenches far away from active mid-ocean ridges.
Explanation:
Beginning in the late 1940s, oceanic expeditions continued to map the Atlantic ocean floor using new equipment and collecting thousands of rock samples. These works made it possible to map a gigantic system of submarine mountain ranges, called meso-ocean ridges. By perfecting the method of dating rocks, scientists have been able to determine the true age of seabed rocks. They found that the closer to the mid-ocean ridge the rocks were much younger than imagined, while rocks close to the continents were increasingly older, thus corroborating the Continental Drift.
History was a driving force behind such migration, since humans tended to move to new territory when they lacked food, shelter, or other resources--meaning that most of the conflicts throughout history have been driven by the same forces that drove migration out of Africa.
Wilson's farm would be more likely to have coarse soil than Byron's farm.
Explanation:
The mountain of Arizona and the flat plains of Kansas offer very different conditions when it comes to farming. Both places have their challenges, but Arizona's mountains are much more problematic when it comes to farming. Some of the reasons for this are the:
- arid and semi-arid climate
- lower quality of the soil
- sloping terrain
- large scale erosion
As mentioned, the soil is not of very high quality, and the chances are that its texture will be coarse one. This would make a problem for Wilson, as this type of soil apart from not being very fertile, is also much harder to work on. The other factors contribute to large scale erosion, which makes it very hard to create a fertile top layer, as it will constantly be stripped off by the natural factors.
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Religion caused many Arabs to move through the Middle East.
During the 600s CE, an Arab expansion took place all over the Middle East. During these years, Muslim conquests became common, and this led to the establishment of unified Arabic empires, or "caliphates."
Try D. Tectonic plates are pushed apart partly due to convention currents
