Answer: plateaus.
Plateau is a large extension of high and quite flat land.
Ages because they indicate it the same way they do trees
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The study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industries.
B is correct because the others are wrong, c is wrong because the reason they have varying states of matter is because pressure and a is wrong because mantle
Isn’t it Popular sovereignty? Do u need to know why or is that it