1. February 8, 2018 Get out stuff for notes
Agricultural revolutions and von thunen
HW: register for ap exam!!!
Pgs

2. KEY ISSUES Where and when did agriculture originate?
Major Agricultural Revolutions
Location of major agricultural regions around the world
Types of agriculture
Economic difficulties faced by farmers

3. ORIGINS OF AGRICULTURE

4. First Agricultural revolution
10,000 BCE
Hunter-gatherer to farming
Nomadic to permanent settlements

5. Crash course video: agricultural revolution

6. Subsistence agriculture
Production mainly for family use
Variety of crops grown on small amount of land
More manual/animal power, less mechanized
Main form of agriculture until second Ag. Rev.
Still dominant in developing nations
Slash and Burn

7. Regions of subsistence agriculture

8. LABOR FORCE IN AGRICULTURE
A large proportion of workers in most LDCs are in agriculture, while only a small percentage of workers in MDCs are engaged in agriculture.

9. SECOND AGRICULTURAL REVOLUTION
Industrial Revolution s
New technologies and techniques  improved crop yields
More mechanized, fewer workers

10. Commercial agriculture
Primarily grown for profit
Few workers
Monoculture
Found in developed nations
Large farms

11. Percentage of workers in different sectors of the economy

13. J.H. Von Thünen German Farmer
Proposed a model in 1826 to explain land use based on his experience
Think back to the beginning of the 19th century: How would you describe his agricultural world? (Think about stage, technology, etc.)

14. A farmer considers 2 things: Cost of the land
Von Thunen Model:
A farmer considers 2 things:
Cost of the land
Cost of transporting product to market
In other words, PROFIT!

15. It doesn‘t always look the same:

16. THIRD AGRICULTURAL REVOLUTION
Green Revolution
1930’s to current day
Genetically modified seeds
Fertilizers and pesticides
Improved irrigation
Canals, irrigation systems
Increased yields

17. Agricultural issues Pollution from chemicals Water scarcity
Decrease in biodiversity
GMOs
Alteration of landscape
Decreasing bee population
Cash Crops

18. Do you treat the school cafeteria different than your kitchen table?
Think-pair-share
Do you treat the school cafeteria different than your kitchen table?
Why?

19. Tragedy of the Commons
Self-interest and competition usually leads to destruction of shared resources
Privatization, cooperation, regulation, and enforcement of regulation can protect shared resources