Asked by ghiu
RECOGNIZING SIMILARITIES AND DIFFERENCES:
Read each question and write the answer in the space provided.
5. How did Mexico benefit from the green revolution between 1950 and 1970? How did India benefit?
a.
6. How was agriculture after the green revolution different from agriculture before the green revolution?
a.
RECOGNIZING CAUSE AND EFFECT:
Read each question and write the answer in the space provided.
7. What do new varieties of grain require to produce large yields?
a.
8. Why has grain production in the United States decreased since 1990?
a.
9. Why are yields from green revolution crops falling in many areas?
a.
10. What effect do the machinery, irrigation, and chemicals required by new crop varieties have on soil?
a.
All Answers 1
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5. How did Mexico benefit from the Green Revolution between 1950 and 1970? How did India benefit?
a. Mexico: Developed and adopted high‑yielding wheat varieties (work led by Norman Borlaug), greatly increased wheat production, reduced risk of famine, improved food security, and raised rural incomes.
India: Adopted high‑yielding wheat and rice varieties (and modern farming methods), sharply increased grain output, achieved greater food self‑sufficiency, and avoided mass starvation.
6. How was agriculture after the Green Revolution different from agriculture before the Green Revolution?
a. Farms used high‑yielding, genetically improved varieties plus much more irrigation, chemical fertilizers, pesticides, and mechanization; production became more intensive, more specialized/monoculture, and more input‑dependent than the traditional, lower‑input mixed farming that preceded it.
7. What do new varieties of grain require to produce large yields?
a. Adequate irrigation/water, high levels of synthetic fertilizers, pesticides/herbicides, good seed management, and often mechanized planting/harvesting and close technical management.
8. Why has grain production in the United States decreased since 1990?
a. Because some cropland has been lost to urban/suburban development and other uses, cropping patterns shifted (more land to other crops or biofuel/feed uses), and long‑term soil/water limits and environmental regulations have constrained expansion — reducing area and/or yield growth for some grains.
9. Why are yields from Green Revolution crops falling in many areas?
a. Because of soil degradation (nutrient depletion, erosion), salinization and falling water tables from intensive irrigation, pest and disease resistance, and declining effectiveness of inputs as ecosystems become degraded.
10. What effect do the machinery, irrigation, and chemicals required by new crop varieties have on soil?
a. They can compact and erode soil (machinery), cause salinization and waterlogging (irrigation), and reduce soil fertility and harm beneficial organisms through chemical overuse — all contributing to long‑term soil degradation.
a. Mexico: Developed and adopted high‑yielding wheat varieties (work led by Norman Borlaug), greatly increased wheat production, reduced risk of famine, improved food security, and raised rural incomes.
India: Adopted high‑yielding wheat and rice varieties (and modern farming methods), sharply increased grain output, achieved greater food self‑sufficiency, and avoided mass starvation.
6. How was agriculture after the Green Revolution different from agriculture before the Green Revolution?
a. Farms used high‑yielding, genetically improved varieties plus much more irrigation, chemical fertilizers, pesticides, and mechanization; production became more intensive, more specialized/monoculture, and more input‑dependent than the traditional, lower‑input mixed farming that preceded it.
7. What do new varieties of grain require to produce large yields?
a. Adequate irrigation/water, high levels of synthetic fertilizers, pesticides/herbicides, good seed management, and often mechanized planting/harvesting and close technical management.
8. Why has grain production in the United States decreased since 1990?
a. Because some cropland has been lost to urban/suburban development and other uses, cropping patterns shifted (more land to other crops or biofuel/feed uses), and long‑term soil/water limits and environmental regulations have constrained expansion — reducing area and/or yield growth for some grains.
9. Why are yields from Green Revolution crops falling in many areas?
a. Because of soil degradation (nutrient depletion, erosion), salinization and falling water tables from intensive irrigation, pest and disease resistance, and declining effectiveness of inputs as ecosystems become degraded.
10. What effect do the machinery, irrigation, and chemicals required by new crop varieties have on soil?
a. They can compact and erode soil (machinery), cause salinization and waterlogging (irrigation), and reduce soil fertility and harm beneficial organisms through chemical overuse — all contributing to long‑term soil degradation.
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