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Chapter 19 Food Resources. World Food Security  Famine-  Maintaining Grain Stocks  Amount of grain remaining from previous harvest  Provides measure.

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Presentation on theme: "Chapter 19 Food Resources. World Food Security  Famine-  Maintaining Grain Stocks  Amount of grain remaining from previous harvest  Provides measure."— Presentation transcript:

1 Chapter 19 Food Resources

2 World Food Security

3  Famine-  Maintaining Grain Stocks  Amount of grain remaining from previous harvest  Provides measure of food security  Decreased each year since 1987

4 Reason for Decline in Grain Stock  Rising temps  Falling water tables and droughts  Ethanol production  More grain is going towards feeding livestock  Increased meat consumption in developing countries

5 World Food Security  Economics and Politics  Cost $ to store, produce, transport and distribute food  political  Poverty and Food  ________people are so poor they cannot afford proper nutrition 1.3 billion

6 Animals as food  Constitute 40% of the calories consumed in developed countries  Only comprise 5% of calories consumed in developing countries

7 Vegetarianism

8   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

9 Principle Types of Agriculture  Industrialized agriculture  Modern methods that require large capital input, and less land and labor  Subsistence Agriculture  Traditional methods, dependent on labor and large amounts of land  Ex: shifting cultivation, Slash and burn agriculture, Nomadic herding, Intercropping

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11  Domestication and Genetic Diversity Challenges of Producing More Crop and Livestock Irish Potato Famine

12  Pesticides  Selective breeding Challenges of Producing More Crop and Livestock

13 Challenges of Producing More  Increasing Livestock Yields  Hormone supplements  US and Canada  Not used in Europe  Antibiotics  40% of antibiotics produced in US are used in livestock operations http://www.foodincmovie.com/

14 Antibiotic Use and Resistance

15 Genetic Engineering

16 Genetically Modified Organisms  Add beneficial characteristics to crops  Additional nutrition  Resistance to pests  Drought resistances  Herbicides

17 Safety in Genetic Engineering  Concerns about GMOs?  Backlash against GMOs  GMOs are not currently labeled  Prop 37

18 Environmental Impacts of Agriculture

19 Solutions to Agricultural Problems- Sustainable Agriculture

20  Overharvesting  Many species are at point of severe depletion  62% of world’s fish stock are in need of management action Fisheries of the World - Problems  No nation lays claim to open ocean

21 Fisheries of the World - Problems  Overharvesting  Bycatch killed off  Magnuson Fisheries Conservation Act http://www.montereybayaquarium.org/cr/seafoodwatch.aspx http://www.youtube.com/watch?v=cyP41Ts2WeU

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23 Fisheries of the World - Problems  Ocean Pollution -  Oil  Heavy metals  Deliberate litter dumping  Stormwater runoff from cities and agriculture  Aquaculture waste

24   http://www.sierraclub.org/truecostoffood/   http://green.yahoo.com/blog/the_conscious_con sumer/151/10-toughest-things-to-get-rid-of.html http://green.yahoo.com/blog/the_conscious_con sumer/151/10-toughest-things-to-get-rid-of.html   http://green.yahoo.com/blog/the_conscious_con sumer/146/signs-of-a-green-hypocrite.html http://green.yahoo.com/blog/the_conscious_con sumer/146/signs-of-a-green-hypocrite.html   http://green.yahoo.com/blog/the_conscious_con sumer/62/decoding-plastics-recycling.html


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