Predict future migration trends in the United States
What will be an ideal response?
Answers might mention recent migrations, continued attractiveness of the West and South, the draw of large cities.
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Regions where humans produce high levels of aerosols and dust will most likely experience
A) less rainfall, reduced solar radiation to the Earth's surface, and cooler temperatures. B) less rainfall, increased solar radiation to the Earth's surface, and higher temperatures. C) more rainfall, increased soil nutrients, and reduced solar radiation to the Earth's surface. D) more rainfall, decreased soil nutrients, and increased solar radiation to the Earth's surface.
A heavy boulder drops onto mud and plows down a certain distance. If it hits the mud with three times as much speed, the plowing distance into the mud is about
A. twice as deep. B. three times as deep. C. more than three times as deep. D. the same distance.
The oceans cover about 50 percent of the earth's surface
Indicate whether the statement is true or false
How do we know the outer core of the Earth is molten?
A) By drilling well to the core. B) Because there are volcanoes. C) By measuring the mass of the Earth. D) Because seismic waves do not travel through that boundary.