Approximately what proportion of the global land surface is used for agriculture and grazing by the world's 6 billion people ?

Approximately what proportion of the global land surface is used for a

1.	Approximately what proportion of the global land surface is used for agriculture and grazing by the world's 6 billion people ?
A.	Three quarters
B.	One tenth
C.	One third
D.	One eightieth
Answer» D. One eightieth

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Approximately what proportion of the global land surface is used for agriculture and grazing by the world's 6 billion people ?

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