What is the percentage of the earth's land used by farmers?

Question

BlackTom AI · Accepted Answer

The question asks us to identify the share of the earth's land that is used by farmers, with four percentage options to evaluate.
Option 1: 25% — This figure underestimates the commonly cited range of agricultural land use in many global assessments, which typically place farmland closer to the near-30% mark rather than a quarter of land.
Option 2: 28% — This choice aligns with widely cited estimates from global land-use studies that report roughly a little under one-third of the world's land is devoted to agriculture, often around 28% in multiple datasets; this makes it a plausible and commonly referenced value.
Option 3: 40% — While some broader maps include pasture, grazing, and cropland, pushing the number higher to about 40% would overstate typical global farmland totals in standard assessments that distinguish forests, deserts, and built-up areas from cropland and pasture.
Option 4: 70% — This figure is far too large for arable land and is inconsistent with global land-use partitions, which reserve a substantial portion of land for non-agricultural uses such as natural ecosystems, urban areas, and forests.
In summary, the second option most closely reflects established global land-use estimates that assign roughly 28% of the earth's land area to farming-related activities, while the other options exceed or undercut the commonly accepted ranges used in agrarian and environmental literature.

What is the percentage of the earth's land used by farmers?单项选择题

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