When is refraction of incoming solar radiation greatest?

A) at sunrise
B) at sunset
C) at mid-day
D) both A and B


Answer: D

Environmental & Atmospheric Sciences

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Which environmental lapse rate represents the most unstable condition in a layer of unsaturated air?

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Seismic gaps are places where scientists think that ________

A) faults are storing elastic strain B) earthquakes are unlikely to occur C) faults are storing stress D) faults are creeping smoothly

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The water table is

A) located 100 feet under the ground. B) part of the mantle. C) flat like a kitchen table. D) uneven and generally follows surface contours.

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What was the main requirement for the development of life on Earth?

a. Exposure to sunlight b. Absence of free oxygen c. Simple sugars d. Energization from electrical sparks

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