SMETEK / SCIENCE PHOTO LIBRARY SMETEK / SCIENCE PHOTO LIBRARY
Rice in Africa, conceptual image. Rice (Oryza sativa) is one of the world's most important crops. Its grains form the staple diet of around half the world's population. The grains provide carbohydrates and can also be used to brew beer. In 2012, the major cereal crop produced in Africa was maize (70 million tons), far more than rice (29 million tons) and wheat (25 million tons).
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