C. Reserved Powers (power not specifically granted to the Federal Gov. is given to the States via the 10th Amendment)
Because it makes the water flow faster
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<span> The "Silent Majority" was a term used by President Richard Nixon to indicate his belief that the great body of Americans supported his policies and that those who demonstrated against the involvement of the United States in the Vietnam War amounted to only a noisy minority.</span>
The terrain is one thing they study, for example, if it is woody, or a plain, or rocky, or if it has mountains, etc.
they also study the plants, animals, etc and how they survive in the conditions
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