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14sec2

  1. 1. 14.2 World Food Supply
  2. 2. Supply and Economics <ul><li>More food produced than ever- more food available per person than ever </li></ul><ul><li>Advances in agricultural practices and technology </li></ul><ul><li>Why so many starving people then? </li></ul><ul><li>Food is traded as a commodity- economic factors affect the distribution </li></ul>
  3. 3. Green Revolution <ul><li>Two main foods of the world- wheat and rice </li></ul><ul><li>Began in 1960’2 with new strains of wheat and rice- better resistance to disease, grow faster, grow in more climates ( fertilizers and irrigation) </li></ul><ul><li>New plants increased crop yields 4X </li></ul><ul><li>New machinery also increased production </li></ul><ul><li>But, people who need it most ( 3 rd world) cannot afford the new technology, machines ( and fuel), fertilizers, or irrigation systems </li></ul><ul><li>Net result- countries like ours produce much more than we need- price of crop goes down; poor farmers cannot get a decent price for their crop </li></ul>
  4. 4. Cash Crops <ul><li>Poor farmers cannot afford to plant and grow food crops, so they grow crops they’ll get more money for- cash crops </li></ul><ul><li>Cash crops include tobacco, opium, livestock feed, etc. </li></ul><ul><li>Cash crops often are exported </li></ul><ul><li>In many developing nations 85% of the farmland is owned by 5% of the people </li></ul><ul><li>Money earned is used to by weapons- support political leaders who will help the landowners. </li></ul>
  5. 5. Hunger <ul><li>Natural causes- drought, overpopulation </li></ul><ul><li>Also caused by gov’ts and profit-driven landowners </li></ul>
  6. 6. Food From Water <ul><li>Fish and sea animals- important source of protein ( 40% of protein in developing nations) </li></ul><ul><li>Currently- 55 billion metric tons produced naturally each year </li></ul><ul><li>Estimated oceans could produce 100 million metric tons for food; we now produce 90 million metric tons- so are we reaching the limit? </li></ul><ul><li>Quantities of some fishes are dropping; over fishing? 40 of 280 commercially harvested fish species are in danger </li></ul><ul><li>Aquaculture-commercial production of fish in a controlled environment </li></ul><ul><li>China, Thailand, India, Vietnam- fish are raised in algae in wastewater ponds </li></ul>

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