D emand for the world's increasingly scarce water supply is rising rapidly, challenging its availability for food production and putting global food security at risk.Agriculture, upon which a burgeoning population depends for food, is competing with industrial, household, and environmental uses for this scarce water supply.Even as demand for water by all users grows, groundwater is being depleted, other water ecosystems are becoming polluted and degraded, and developing new sources of water is getting more costly.
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Rosegrant et al. (2002) studied this question.
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