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Question

What is the habitable portion of the World Land Area?

A
Less than 35%
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B
Less than half of it
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C
50%
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D
About 75%
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Solution

The correct option is B Less than half of it
The total land surface area of Earth is about 57,308,738 square miles, of which about 33% is desert and about 24% is mountainous. Subtracting this uninhabitable 57% (32,665,981 mi2) from the total land area leaves 24,642,757 square miles or 15.77 billion acres (43%) of habitable land.

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