The area of the Earth's total surface is of the order of ________.?

1.	The area of the Earth's total surface is of the order of ________.?
A.	510 million square kilometres
B.	450 million square kilometres
C.	400 million square kilometres
D.	350 million square kilometres
Answer» B. 450 million square kilometres

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The area of the Earth's total surface is of the order of ________.?

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