Chapter 18 Food Resources. World Food Security Poverty and Food ________people are so poor they...
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Transcript of Chapter 18 Food Resources. World Food Security Poverty and Food ________people are so poor they...
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Chapter 18Chapter 18Food ResourcesFood Resources
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World Food SecurityWorld Food Security
Poverty and FoodPoverty and Food ________people are so poor they cannot ________people are so poor they cannot
afford proper nutritionafford proper nutrition1.3 billion
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Reason for Decline in Grain Reason for Decline in Grain StockStock Rising tempsRising temps Falling water tables Falling water tables
and droughtsand droughts Ethanol productionEthanol production More grain is going More grain is going
towards feeding towards feeding livestocklivestock
Increased meat Increased meat consumption in consumption in developing developing countriescountries
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Animals as foodAnimals as food
Constitute 40% of the calories Constitute 40% of the calories consumed in consumed in developeddeveloped countries countries
Only comprise 5% of calories Only comprise 5% of calories consumed in consumed in developingdeveloping countries countries
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Vegetarianism
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One personal act that can have a profound impact on these issues is reducing meat consumption.
To produce 1 pound of feedlot beef requires about 2,400 gallons of water and 7 pounds of grain (42).
If all the grain currently fed to livestock in the United States were consumed directly by people, the number of people who could be fed would be nearly 800 million
Vegetarianism
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Principle Types of Principle Types of AgricultureAgriculture Industrialized agricultureIndustrialized agriculture
Modern methods that require large Modern methods that require large capital input, and less land and laborcapital input, and less land and labor
Subsistence AgricultureSubsistence Agriculture Traditional methods, dependent on labor Traditional methods, dependent on labor
and large amounts of landand large amounts of land Ex: shifting cultivation, Slash and burn Ex: shifting cultivation, Slash and burn
agriculture, Nomadic herding, agriculture, Nomadic herding, IntercroppingIntercropping
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Domestication and Domestication and Genetic DiversityGenetic Diversity
Challenges of Producing Challenges of Producing More Crop and LivestockMore Crop and Livestock
Irish Potato Famine
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PesticidesPesticides Selective Selective
breedingbreeding
Challenges of Producing Challenges of Producing More Crop and LivestockMore Crop and Livestock
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Challenges of Producing Challenges of Producing MoreMore
Increasing Livestock Increasing Livestock YieldsYields Hormone Hormone
supplementssupplements US and CanadaUS and Canada Not used in EuropeNot used in Europe
AntibioticsAntibiotics 40% of antibiotics 40% of antibiotics
produced in US are used produced in US are used in livestock operationsin livestock operations
http://www.foodincmovie.com/
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Antibiotic Use and Antibiotic Use and ResistanceResistance
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Genetic EngineeringGenetic Engineering
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Genetically Modified Genetically Modified OrganismsOrganisms Add beneficial characteristics to Add beneficial characteristics to
cropscrops Additional nutritionAdditional nutrition Resistance to pestsResistance to pests Drought resistances Drought resistances Herbicides Herbicides
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Safety in Genetic Safety in Genetic EngineeringEngineering Concerns about GMOs? Concerns about GMOs? GMOs are not currently labeledGMOs are not currently labeled Prop 37Prop 37
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Environmental Impacts of Environmental Impacts of AgricultureAgriculture
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Solutions to Agricultural Solutions to Agricultural Problems- Sustainable Problems- Sustainable AgricultureAgriculture
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OverharvestingOverharvesting Many species are Many species are
at point of at point of severe depletionsevere depletion
62% of world’s 62% of world’s fish stock are in fish stock are in need of need of management management actionaction
Fisheries of the World - Fisheries of the World - ProblemsProblems
No nation lays claim to open oceanNo nation lays claim to open ocean
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Fisheries of the World - Fisheries of the World - ProblemsProblems
OverharvestinOverharvesting g
Bycatch killed Bycatch killed offoff Magnuson Magnuson
Fisheries Fisheries Conservation Conservation ActAct
http://www.montereybayaquarium.org/cr/seafoodwatch.aspxhttp://www.youtube.com/watch?v=cyP41Ts2WeU
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Fisheries of the World - Fisheries of the World - ProblemsProblems Ocean Pollution Ocean Pollution - -
Aquaculture wasteAquaculture waste