Chapter 11a

Chapter 11a - Chapter 11 Producing Enough Food for the...

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Chapter 11 Producing Enough Food for the World: How Agriculture Depends on Environment
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1-2 Billion people undernourished
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Arable Land Land where crops could potentially be grown (arable land) =10-12 million square miles 57 million square miles of total land available world wide distributed evenly, 133 people/sq. mile = 0.5 acres of land/person for everything we need Losing about 38k square miles/year of arable land
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Food Crops vs. Total Plant Species 500,000 plant species on earth ~3000 have been cultivated on large scale ~150 produced on large scale
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Important crops These 6 provides over 80% of calories used by humans! 1. Wheat 2. Rice 3. Maize 4. Potatoes 5. Sweet potatoes 6. Cassava (manioc, yuca)
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More important crops 7. Sugar cane 8. Sugar beet 9. Common beans 10. Soybeans 11. Barley 12. Sorghum 13. Coconuts 14. Bananas
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Additional “crops” Forage crops for livestock alfalfa, sorghum, grasses (hay) Livestock that we eat or use (numbers currently
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This note was uploaded on 05/27/2008 for the course ENSC 1001 taught by Professor Skelton during the Spring '08 term at GCSU.

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Chapter 11a - Chapter 11 Producing Enough Food for the...

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