01:119:150 Lecture 5: BIO SOC 7_23_20
30 Sep 2020
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10 genetically modified food facts - wmnews ep. All organisms require substances to sustain life. Human beings require certain vitamins and minerals to stay healthy. Water soluble (b1, b2, b5, b6, b12, c, niacin, biotin, folic acid ) Needed minerals (zinc, copper, magnesium, manganese, potassium, sodium, calcium, iodine, 1950s: food supply growth greater than growth of population (famine decreased) Late 1960s: increased crop yields, similar to 1950s. Components of world food problem: population (in developing nations, food is scarce and pop growth is rapid. In developed nations, food is plentiful and pop growth is slower. : overconsumption (in wealthy countries, people overeat. People should eat more grain and more high fiber foods. : political and economic barriers to food production (bread vs. Guns (defense spending prioritized), some countries cannot afford factors of food production: climate. Green revolution - introduction of new varieties of wheat and rice to countries (india, pakistan, Brazil, mexico, philippines in the 1960s) increases crop yield.
