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Irrigating crops creates a number of problems. Which of the following is not one of those problems?
Q20: If we are to continue using conventional
Q51: Four of the following are ways to
Q52: Unfenced grasslands in tropical and temperate climates
Q59: The long-term global outlook for conventional natural
Q61: Oysters in Chesapeake Bay were once so
Q79: If estimates of an extinction rate of
Q85: Because of greatly increased irrigation, Africa's Lake
Q92: The distribution of many aquatic organisms is
Q99: What does the letter D represent?
Q110: Sustainable management of freshwater fishes involves all