why do you thing modern method of lifting water has proved to be unsus tainable
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Irrigated crops play a vital role in securing global food production. Approximately 40% of food globally is produced from irrigated crops, sustaining the livelihood of billions of people1. In order to sustain irrigation, large amounts of water are withdrawn from rivers, lakes, reservoirs, and groundwater, together making up about 70% of global water withdrawals. In regions overlying productive aquifers, wherever access to surface water is limited, groundwater is the main source of irrigation water.
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