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  • What changed? High-yield, drought-resistant, semi-dwarf varieties of wheat and other crops were introduced to these countries by an initiative headed
    7 KB (1,156 words) - 23:12, 21 June 2013
  • ...an starve in the middle of a field of wheat if your mind hasn't identified wheat as edible." The greater the population, the greater the store of human inte
    4 KB (644 words) - 06:46, 14 September 2010