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Q22: All of the following are considered to
Q23: Cutting down on energy waste has many
Q43: If irrigation was just _% more efficient,
Q57: A 2009 U.S.Department of the Interior study
Q64: The world's population increase between now and
Q76: The U.S.government ha provided huge subsidies, tax
Q85: Because of greatly increased irrigation, Africa's Lake
Q94: In 2003, the U.S.Environmental Protection Agency (EPA)
Q103: Producing ethanol using switchgrass produces more than
Q115: What part makes up 71% of the