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Published byMalcolm Lucas Modified over 8 years ago
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Feeding the World CH 11
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Growing enough food to meet a family’s immediate needs..even livestock Only make what u need Use the sun, own labor, and large animals Practiced in 3 rd world countries and villages Smaller impact on environment CH 11.1 SUBSISTENCE AGRICULTURE
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Draft Animals- Large animals used to pull equipment Domesticated- Bred for human use SUBSISTENCE AGRICULTURE
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Most common in wealthy nations Uses machinery that consumes energy Uses fertilizers, pesticides, irrigation and causes more waste Few workers needed 11% of Earth’s land covered in farms 25% used for grazing Requires large amounts of water “plantation ag” grow large amounts of a single crop ex: bananas, cocoa, coffee INDUSTRIALIZED AGRICULTURE
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Crop Yield- Size of harvest from a particular crop Pasture- Land used for livestock grazing INDUSTRIALIZED AGRICULTURE
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Dead Zone- an area in the ocean where marine life cannot survive Plantation agriculture- large scale farm that only grows one crop… usually in tropical areas INDUSTRIALIZED AGRICULTURE
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Feedlot- small area where large numbers of livestock are raised Rangeland- grass-covered land that animals can graze on INDUSTRIALIZED ANIMAL PRODUCTION
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Layers of soil Humus- Layer of soil CH 11.2 PROTECTING SOIL
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Siltation- The buildup of soil in an aquatic ecosystem No-till farming – Leaving the soil undisturbed
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Contour farming – Planting crops around curves to reduce erosion. Soil is more fertile Shelterbelt – A row of trees planted to help block wind
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Green Revolution- A large increase in crop yields achieved by developing new varieties of plants… ex: Wheat 11.3 WORLD FOOD SUPPLY AND NUTRITION
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Calories Protein- eggs Fats- meats Carbs- sugar Iron – meat; dark leaves Calcium - milk Vitamin C- fruits DIETARY NEEDS
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Not consuming enough fats, carbs, or protein Leads to anemia, over nutrition, and famine MALNUTRITION
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Over nutrition- too much food Famine – not enough food
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Farmers markets- local farmers sell their produce Community- supported agriculture- system where members pay farmers weekly SUSTAINABLE AGRICULTURE- PRODUCING FOOD WITHOUT DEPRIVING FUTURE GENERATIONS EX; ORGANIC
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SHADE-GROWN COFFEE Coffee grown in the shade of tropical trees. Reduce cutting trees
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Gill and drift netsBy catch 11.5 FISHERIES
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Immature Overfishing By catch Trawl net- long line dragged on ocean floor Longline- lots of hooks PROBLEM
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AQUACULTURE
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