Presentation on theme: "Warmup A model is useful in that it A.Conveys the whole truth about a phenomenon B.Eliminates the complexity associated with the world C.Provides a comprehensible."— Presentation transcript:
Warmup A model is useful in that it A.Conveys the whole truth about a phenomenon B.Eliminates the complexity associated with the world C.Provides a comprehensible and limited view of a phenomenon D.Relies completely on empirical data for confirmation or refutation E.Eliminates the need to use math or quantifiable data
What is this chart illustrating? Primary activities Secondary activities
Most of these are located in __________________.
How has modern technology and population affected the world’s oceans?
For each of the following causes, list the effect (this is based on your book and class discussion) 1970s: Studies show that beef is fatty 1990s: The Atkins diet craze (anti-carbohydrate) 2000s: Genetically modified foods are widespread
Fully define the Green Revolution The invention and rapid diffusion of more productive agricultural techniques during the 1970s and 1980s. These techniques involved higher-yield (high production) seeds and chemical fertilizers.
Explain increases in rice production In many regions in Asia, from 1970-1995, rice production doubled. GR seeds went from 0% of planted rice in the 1960s to over 80% of planted rice today in many parts of Asia. Sources: http://countrystudies.us/philippines/62.htmhttp://countrystudies.us/philippines/62.htm http://www.highbeam.com/doc/1G1-16514368.html
Negative Effects of the GR Decreased crop variations. Requires heavy machinery, therefore excluding many poor farmers. Many new crops are resistant to traditional pesticides. LDC farmers enter a cycle of dependence on multinational corporations like Monsanto. Does not address economic inequality.
Positive Effects of the GR More food = more people who can be fed. New crops are more responsive to irrigation and to petrochemical fertilizers. Postpones the predictions of Thomas Malthus. Reduction in poverty in many regions, particularly Asia.
Gender Effects of the GR Women's wage-earning opportunities have decreased because of mechanization. Source: http://www.fao.org/FOCUS/E/Women/green-e.htm
Food Security Access to and availability of food, Resource distribution to produce food Purchasing power to buy food where it is not produced. Source: http://www.fao.org/FOCUS/E/Women/Sustin-e.htm
Sustainable Agriculture Agricultural practices that preserve and enhance environmental quality. GR is not focused on sustainability. Intensive GR farming could lead to soil exhaustion. Fertilizers in the GR may hurt local ecosystems.
Food Distribution: Two Arguments 1 – The GR increased crop yields across the world, driving up the supply of food and driving down to costs. As a result, the poor had food and more job opportunities in agriculture.
Food Distribution: Two Arguments 2- The GR drove many poor farmers out of business because they could not afford GR seeds. Additionally, LDCs are still poor, and it does not matter how much food is produced if the poor cannot afford it.
According to von Thunen, what is the regional geography of agriculture determined by? RENT
How does relative location affect each of the following categories in von Thunen’s model? -Horticulture and dairy- Spoils quickly, most value per acre. -Logging- High transport cost due to weight, medium value per acre -Crops and grazing- Requires enormous amounts of land, low value per acre.
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