Ch 9 ppt eating lower of the food chain


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Ch 9 ppt eating lower of the food chain

  1. 1. Eating Lower on the Food Chain Shhh, girls!! I want to hear about this!
  2. 2. Union of Concerned Scientists: List of Top Things You Can Do to Help the Planet • #1. Drive less • #2. Eat less red meat and dairy products • #3. Conserve on heating and cooling costs in the home
  3. 3. Cow products are the worst! • Nearly 87% of our agricultural land (50% for cows alone!) is engaged in animal production for food I BEG YOUR PARDON ?
  4. 4. U.S. Crop % that goes to feed cows • 80 - 90% of our soybeans, oats, wheat and corn What! You have a problem with that?
  5. 5. Cow efficiency • It takes 16 lbs of wheat to make 1 lb of cow • 5000 gallons of water per lb of cow • (A lb of soybeans only takes about 260 gallons of water)
  6. 6. • A typical North American Diet requires twice as much water to produce as less meat- intensive diets common in Asia and Europe. • Eating lower on food chain : same water could feed double the people • Making animal products use ½ the water in US • 1 dairy cow drinks about 29 gallons of water a day, and needs 40 additional gallons for sanitation, producing only 8 gallons of milk Got Water?
  7. 7. Pollution (Deep Doo-Doo!) • EPA : agricultural runoff = primary pollution source for 60% of U.S. polluted rivers and streams • Animal ag. = 130 times more than human waste and equivalent to 5 tons per person. • AND ITS NOT TREATED BY A SEWAGE TREATMENT PLANT! • The manure from a 200-head dairy operation produces as much nitrogen as sewage from a town of 10,000 people! • One dairy cow produces 120 lbs of waste a day, 12 times as much as a person • This is a total of 22 tons per cow per year.
  8. 8. Got Trees? • Eating a plant based diet personally saves an acre of trees annually • 260 million acres of U.S. forests have been cleared for livestock production.
  9. 9. Our foreign suppliers • Throughout Central and South America, grazing and feed grain production are the leading economic forces behind rainforest destruction. • Every quarter lb hamburger costs Mother Nature 55 square feet of forest land! • U.S. is the world’s top beef importer. • A fast food restaurant can claim to buy from a U.S. supplier but suppliers are not required to declare the nation of origin of their products.
  10. 10. Got Petroleum? • Americans consume nearly as much fossil fuels at the supermarket as at the gas pump. • The typical American burns about 530 gallons of gas each year driving. • Eating a meat based diet gobbles up an additional 400 gallons of oil.
  11. 11. • One acre of corn requires 140 gallons of oil to produce. • Eating corn directly maximizes the energy investment. • If the corn goes to livestock, only about a fifth of the protein is returned as food, four-fifths is lost
  12. 12. Additional tidbits • One quarter of all antibiotics produced are used in the U.S. for food animals • Foreign originated veggies may have been sprayed with DDT • L.A. water is full of DDT, washed off from foreign fruits and veggies! • DDT is stored in fat – linked to breast cancer (90% breast cancer patients have DDT in their systems)