Approximately what percentage of the world's population currently lives in urban areas?
A. 10%
B. 25%
C. 50%
D. 66%
E. 75%
Answer: C
Environmental & Atmospheric Sciences
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Cloud cover moderates the daily temperature range by reflecting incoming solar radiation during the day and absorbing longwave radiation from Earth at night.
A) true B) false
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One would normally begin with ________ in a GIS project:
A. data acquisition B. data exploration C. data display D. data analysis
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In a volume of air near Earth's surface today, ____ occupies 78 percent and ____ nearly 21 percent
a. ?nitrogen; oxygen b. ?hydrogen; oxygen c. ?oxygen; hydrogen d. ?nitrogen; water vapor e. ?hydrogen; helium
Environmental & Atmospheric Sciences
A streamlined hill molded from till is termed a(n) ____
a. roche moutonnée b. arête c. kame terrace d. drumlin
Environmental & Atmospheric Sciences