A wall stands using gravity. It is constantly being pulled down. Many also place them in ways that they dig into the ground, and almost make a socket just for the wall to be placed, using the land that is there. More and more walls are placed and eventually, they make flooring and a roof.
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I think that PROCESSING is an example of secondary econmic
Answer:
I think it is rivers because you can't drink out of the ocean and lakes are nasty aquifers are usually smaller so rivers would be most likely
Explanation:
<span>D) provide electrical power to an poor and rural regions of the U.S.</span>
Answer: Combats social exclusion and discrimination. Promotes scientific and technological progress.