Which of the Following Is True

question 62

Multiple Choice

Which of the following is true?

• A)Only about 10% of the world's food comes from land-based agriculture.
• B)Soil degradation is a problem unique to the past two centuries.
• C)More than 20% of cultivated land was degraded between 1989 and 2003.
• D)The Mayan Empire serves as a model for excellent soil management.

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