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Flashcards in lecture 12: agriculture developments Deck (9)
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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%