Answer:
Law of Superposition
Explanation:
According to the law of superposition, the sediments are usually deposited on top of one another, giving rise to the formation of sedimentary layers. In an undisturbed sedimentary sequence, the layers that are formed at the apical portion are the youngest and the layers that are found at the base are the oldest.
Thus, the concept of laying down of sediments on top of one another is the law of Superposition.
The Sahel Region is the region that borders between the Sahara Desert to the North and Sudanian Savannah to the South. The countries which are known to traditionally make up the Sahel region are the Gambia, Senegal, Mauritania, Mali, Burkina Faso, Algeria, Niger, Nigeria, Cameroon, Chad, Sudan, South Sudan and Eritrea. Although the entirety of these countries are not considered all to fall within the Sahel Region.
Answer:
is a perceptual region located primarily in the southern states of the United States.
Explanation:
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