The combined albedo of Earth and the atmosphere is approximately ____ percent

a. ?4
b. ?10
c. ?30
d. ?50
e. ?90


ANSWER: c

Environmental & Atmospheric Sciences

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The Earth's magnetic field is generated by

A. convection currents in the asthenosphere. B. aligned magnetic minerals within Earth's inner core. C. salty water moving through the deep parts of the crust. D. movement of iron and electrical currents within Earth's outer core.

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when was the first attempt to measure the distance to the sea floor?

What will be an ideal response?

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Tornadoes most often move TOWARDS what direction?

A) southeast B) northwest C) west D) northeast

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