ENVS 1000 Study Guide - Final Guide: Bovine Spongiform Encephalopathy, Glyphosate, Crop Diversity
13 Dec 2016
School
Department
Course
Professor
Agriculture
Causes of the green revolution:
● Fertilizers
● Better forms of irrigation
● Pest control
● New crop varieties
● Mechanization
What happens when a country becomes more industrialized
● More meat consumption
○ Uses more water
○ Not efficient use of grains
○ CAFO (concentrated animal feeding operation)
■ Animal waste
■ Mad cow disease
● From cows eating diseased cow parts
Threats to modern agriculture
● Groundwater depletion
● Loss of crop diversity
● Loss of productive soil
● Nutrient pollution
GMO’s
● Pros:
○ Higher yields
○ Higher profit
○ Pest resistant
○ Herbicide resistant (roundup ready sugar beets)
● Cons:
○ Cross pollination
○ Sometimes affect non-target organisms
○ Corporate control
Ways to change crops
● Expose to radiation
○ Induce mutations
● Direct gene editing
● Hybridization
● Artificial selection
Non-renewable Energy
Coal
● Most harmful emissions to human health
● Longest lifespan (in US)
Oil
● Most used globally
● Easy transportation
Natural gas
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