Light-colored ice and snow in polar regions cool the earth by reflecting incoming solar energy back into space. This process is called ____.

A. a tipping point
B. Milankovitch cycles
C. the albedo effect
D. the greenhouse effect
E. acidification


Answer: C

Environmental & Atmospheric Sciences

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becomes a(n) ____________________ rock. Fill in the blank(s) with the appropriate word(s).

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What will be an ideal response?

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The use of biomass for cooking and heating is an important source of energy in many less developed countries. Which of the following is an issue related to this use of biomass?

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The speed and direction of motion of an object is its ____________________

Fill in the blank(s) with correct word

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