Answer:
The number of immigrant rapidly increased, since the US census chart shown the percentage of region of birth reported, the number of total number between 1900 and 1990, jumped from the population of 10,341,276 to 19,767,316
It is called the compound microscope.
Geomorphology, as a critical component of physical geography, is needed to understand natural landform changes and potential hazards for populations.
Explanation:
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A. Earth's rotation