Listen Base your answer to this question on the passage below and on your knowledge of social studies. Africa did not experience a green revolution. Tropical Africa lacks the massive floodplains that facilitate the large-scale and low-cost irrigation found in Asia. Also, its rainfall is highly variable, and impoverished farmers have been unable to purchase fertilizer. The initial Green Revolution research featured crops, especially paddy rice and wheat, not widely grown in Africa (high-yield varieties suitable for it have been developed in recent years, but they have not yet been disseminated [distributed] sufficiently). The continent's food production per person has actually been falling, and Africans' caloric intake is the lowest in the world; food insecurity is rampant [widespread]. Its labor force has remained tethered [tied] to subsistence agriculture.. Source: Jeffrey Sachs, "Can Extreme Poverty Be Eliminated?," Scientific American, 2005 Based on this passage, which statement best explains why the Green Revolution has had little impact in Africa? 1. Large-scale irrigation projects impoverished African farmers. 2. Africa's rural workforce has a low caloric intake. 3. Africa grows mostly paddy rice and wheat. Geographic factors in Africa were ignored. 4.

Listen Base your answer to this question on the passage below and on your knowledge of social studies. Africa did not experience a green revolution. Tropical Africa lacks the massive floodplains that facilitate the large-scale and low-cost irrigation found in Asia. Also, its rainfall is highly variable, and impoverished farmers have been unable to purchase fertilizer. The initial Green Revolution research featured crops, especially paddy rice and wheat, not widely grown in Africa (high-yield varieties suitable for it have been developed in recent years, but they have not yet been disseminated [distributed] sufficiently). The continent's food production per person has actually been falling, and Africans' caloric intake is the lowest in the world; food insecurity is rampant [widespread]. Its labor force has remained tethered [tied] to subsistence agriculture.. Source: Jeffrey Sachs, "Can Extreme Poverty Be Eliminated?," Scientific American, 2005 Based on this passage, which statement best explains why the Green Revolution has had little impact in Africa? 1. Large-scale irrigation projects impoverished African farmers. 2. Africa's rural workforce has a low caloric intake. 3. Africa grows mostly paddy rice and wheat. Geographic factors in Africa were ignored. 4.