NREM 120 Exam 3 Questions with Correct Answers Latest Version 2025
How many Americans earn a living from farming? - Answers ~2%
What percentage of the American workforce was farming in 1900? - Answers 41%
How many people does one farmer feed in 1950? - Answers 15.5 people
How many people does one farmer feed in 2012 - Answers 155 people
How many acres does cropland cover? - Answers 3.8 billion acres
How many acres does pasture cover? - Answers 8.4 billion acres
What percentage of the Ice-free land on earth is used for Agriculture? - Answers ~40%
How many acres of land do we clear for Ag a year? - Answers 12-25 million acres
Out of the 7,000 plants we eat, how many types are farmed? - Answers 150 types
What percent of grain farmed is fed to animals? - Answers ~35%
What is the most farmed crop - Answers cereals
What are the 3 big farming nations - Answers US, China, and Brazil
What is the most prevalent livestock raised? - Answers poultry
-a head number of 21 billion
What increases Ag expansion? - Answers Biofuel production, not distribution
How much of the worlds calories are wasted due to rotting or discard? - Answers 1/3
What is grain mostly used for? - Answers Feed for livestock and in the production of biofuel
Norman Borlaug - Answers The man who feed a billion people
Intensification - Answers creating more product with the same land area in the same location
Extensification - Answers introducing production into land areas that were previously unused or used for
less intensive purposes
Green Revolution - Answers focuses on cultivators, intensive industrial inputs, mechanization, size, and
monocultures
Straight breeding (Green Rev.) - Answers GMO's
Mononcultures - Answers cultivation of a single crop in a given area
, Improvements of the Green Rev. - Answers world grain production has greater than doubled since the
start of the revolution
How much more corn do we produce now than in the 1930's? - Answers 5 times more, but we farm 20%
fewer acres
How many acres is corn grown on? - Answers 90 million acres
How many acres would be needed to grow corn if we still used methods from 1931? - Answers 490
million acres
What does the Green Revolution rely on? - Answers -Irrigation
-Fertilizers
-Pesticides
-Mechanized farm implements
-Monocultures
What was the peak amount of nitrogen us in the US? - Answers 24 million tons
What are the downsides of the Green Rev.? - Answers -use of irrigation leads to soil salinization
-use of inorganic fertilizers leads to pollution, nitrates in ground water, and eutrophication
-lower soil quality
Why are Gulf of Mexico gulf coast fisheries harmed? - Answers nitrates leached from farms and cities
are washed into the Mississippi watershed causing a seasonal oxygen deficit
Which state leads the US in runoff soil erosion? - Answers Iowa
Agroecology - Answers application of ecological concepts and principles to the design and management
of sustainable agroecosystems.
-meant to ensure Ag in the future is both productive and sustainable
Agroecology Goals - Answers -protection of soil quality
-clean surface and filtered ground water
-recycling nutrients and residues effectively and efficiently
-biological diversity and stability
-wildlife habitat
How many Americans earn a living from farming? - Answers ~2%
What percentage of the American workforce was farming in 1900? - Answers 41%
How many people does one farmer feed in 1950? - Answers 15.5 people
How many people does one farmer feed in 2012 - Answers 155 people
How many acres does cropland cover? - Answers 3.8 billion acres
How many acres does pasture cover? - Answers 8.4 billion acres
What percentage of the Ice-free land on earth is used for Agriculture? - Answers ~40%
How many acres of land do we clear for Ag a year? - Answers 12-25 million acres
Out of the 7,000 plants we eat, how many types are farmed? - Answers 150 types
What percent of grain farmed is fed to animals? - Answers ~35%
What is the most farmed crop - Answers cereals
What are the 3 big farming nations - Answers US, China, and Brazil
What is the most prevalent livestock raised? - Answers poultry
-a head number of 21 billion
What increases Ag expansion? - Answers Biofuel production, not distribution
How much of the worlds calories are wasted due to rotting or discard? - Answers 1/3
What is grain mostly used for? - Answers Feed for livestock and in the production of biofuel
Norman Borlaug - Answers The man who feed a billion people
Intensification - Answers creating more product with the same land area in the same location
Extensification - Answers introducing production into land areas that were previously unused or used for
less intensive purposes
Green Revolution - Answers focuses on cultivators, intensive industrial inputs, mechanization, size, and
monocultures
Straight breeding (Green Rev.) - Answers GMO's
Mononcultures - Answers cultivation of a single crop in a given area
, Improvements of the Green Rev. - Answers world grain production has greater than doubled since the
start of the revolution
How much more corn do we produce now than in the 1930's? - Answers 5 times more, but we farm 20%
fewer acres
How many acres is corn grown on? - Answers 90 million acres
How many acres would be needed to grow corn if we still used methods from 1931? - Answers 490
million acres
What does the Green Revolution rely on? - Answers -Irrigation
-Fertilizers
-Pesticides
-Mechanized farm implements
-Monocultures
What was the peak amount of nitrogen us in the US? - Answers 24 million tons
What are the downsides of the Green Rev.? - Answers -use of irrigation leads to soil salinization
-use of inorganic fertilizers leads to pollution, nitrates in ground water, and eutrophication
-lower soil quality
Why are Gulf of Mexico gulf coast fisheries harmed? - Answers nitrates leached from farms and cities
are washed into the Mississippi watershed causing a seasonal oxygen deficit
Which state leads the US in runoff soil erosion? - Answers Iowa
Agroecology - Answers application of ecological concepts and principles to the design and management
of sustainable agroecosystems.
-meant to ensure Ag in the future is both productive and sustainable
Agroecology Goals - Answers -protection of soil quality
-clean surface and filtered ground water
-recycling nutrients and residues effectively and efficiently
-biological diversity and stability
-wildlife habitat
