how much of the earth's surface is covered in concrete?

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how much of the earth's surface is covered in concrete?

how much of the earth's surface is covered in concrete?

22-07-2007, 14:39

welljust_me welljust_me eshte Jashte Linje

I/e Sapoardhur

Reg: 22-07-07

Postime: 1

how much of the earth's surface is covered in concrete?

if i totaled all the sidewalks, buildings and dams, what percentage of the earth would be covered with concrete?

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