Plate tectonics is a theory that the Earth's outer crusts are divided into seven plates that glide over the mantle. They are often blamed for earthquakes.
The correct answer is: [C]: "central" .
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Since this is a square you can set 3x+20=5x then you can solve for x.
Subtract 3x from both sides:
3x-3x+20=5x-3x
20=2x
Divide both sides by 2
20/2=2x/2
10=x
Hope this helps.
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Explanation:
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When defining regions, geographers avoid using subjective information in determining boundaries. This includes opinions and perceptual information. So the answer is Subjective information.
