Chapter 9 - Chapter 9, Agriculture Major Questions: 1. What...

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Chapter 9, Agriculture Major Questions: 1. What is the central conflict in agriculture? 2. Why is there famine and how does this relate to production? 3. What are soils, why are they important to agriculture, what are their main characteristics? 4. Why and how do we use fertilizers? What kinds of fertilizers are there? What are the differences between industrial and organic fertilizers? What are the implications of fertilizer use? 5. What is genetic engineering, how is it done? What are the risks, what are the benefits? 6. What are some potential futures of global food supply? Famines are characterized by large-scale food shortages, massive starvation, social disruption, and economic chaos. Mass migrations often occur because productive capacity has been sacrificed. Environmental conditions are immediate trigger, but politics and economics are often underlying problems . Malnourishment - Nutritional imbalance caused by a lack of specific dietary components. Obesity - The most common dietary problem in wealthy countries is over-nutrition Nutritional Problems Iron deficiency and anemia Protein deficiency Kwashiorkor - “Displaced Child” - Occurs mainly in children whose diet lacks high-quality protein. Reddish-orange hair, bloated stomach. Marasmus - “To Waste Away” - Caused by a diet low in protein and calories. Three crops deliver majority of world’s nutrients : Wheat, Rice and Corn - Potatoes, barley, oats and rye are staples in cool, moist climates. - Cassava, sweet potatoes, and other roots and tubers are staples in warm wet climates. Meat and Dairy More developed countries make up 20% of world population, but consume 80% of meat and dairy production
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Soils Soil - A complex mixture of weathered minerals, partially decomposed organic materials, and a host of living organisms. At least 15,000 different soil types in the US.
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This note was uploaded on 11/15/2007 for the course ENVS 1000 taught by Professor Neff,jason during the Fall '07 term at Colorado.

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Chapter 9 - Chapter 9, Agriculture Major Questions: 1. What...

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