lecture 12: agriculture developments Flashcards
1
Q
Cuyahoga River
Fire
A
The Cuyahoga river caught on fire
multiple times due to oil and sludge
being dumped by industries.
2
Q
Third Wave of Environmental Policy
A
Environmental activism led to
new environmental protection
laws in the 1960s –70s.
3
Q
Two types of land devoted to agriculture
A
Cropland –used for raising plants
Rangeland –used for grazing livestock
4
Q
How much of US is devoted to agriculture?
A
About 50%
• Cropland –20%
• Pasture and Rangeland –29%
5
Q
Nevada Land Cover
A
74% of Nevada is rangeland (shrubs)
6
Q
Polycultures
A
mixed crops
7
Q
History of Agriculture
A
Traditional, Industrial Agriculture
8
Q
Industrial Agriculture four key developments
A
(#1) Mechanized Farm equipment (#2) Groundwater pumping and Spray Irrigation (#3) Synthetic Fertilizers (#4) New Wheat Variety
9
Q
Currently, __ of world population
supported by synthetic fertilizers
A
27%
