Human Ecology - Topsoil Change over Time -1780s- 9 inches...

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Topsoil Change over Time -1780s- 9 inches of topsoil -1980s- 6 inches of topsoil -Disappeared because of changes in farming practices -Topsoil is displaced after growing season, wind erodes fields Price of Food -Over the last 30 years, food prices have escalated -Corporate farms contribute to this raise in price Starvation in Darfur -700-800,000,000 people are malnourished -2,000,000,000 people live on the edge of poverty -3/5 live in horrible conditions -Can produce enough in calories to keep the world’s population fed About 10% of stored food will be ruined by spoilage and rodents Most shrimp have been imported from India Feral Animals -Overrun with pets -Santa Barbara, California- had a population of 75,000 people and 60,000 dogs -New York City had 500,000 dogs -1/4 of winged species are in decline due to cats and collisions with society -Estimated 77.7 million pet cats -60-100,000,000 more feral and stray cats Land suitable for cultivation is already being cultivated, so escalating food production would be difficult 1 acre of land to grow enough food for 1 person for 1 year 280 billion dollars to feed the people added to the population
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This note was uploaded on 10/12/2011 for the course BIOLOGY 100 taught by Professor Smith during the Spring '11 term at South Carolina Upstate.

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Human Ecology - Topsoil Change over Time -1780s- 9 inches...

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