EQ3 converting grassland into cropland USA Flashcards
1
Q
What has been the trend in corn production in the American Midwest since 2007?
A
Increasing amounts of corn for biofuels
2
Q
What percentage of all petrol uses ethanol from corn? (USA)
A
91%
3
Q
What are the benefits of natural grasslands?
A
- Reduce CO2 emissions from transport
- Boost the economies of rural US states
- Act as a carbon sink - absorb CO2 and release O2
4
Q
What are the disadvantages of converting grassland to croplands? (USA)
A
- By 2013, the price of corn trebled
- Over 6 million hectares of natural grassland disappeared
- Cultivated soils are liable to erosion by runoff and wind
5
Q
Fill in the blank: Ethanol from corn is used in _______ of all petrol.
A
91%
6
Q
True or False: Natural grasslands help to boost the economies of rural US states.
A
True
7
Q
Fill in the blank: By 2013, the price of corn _______.
A
trebled
8
Q
What happened to over 6 million hectares of natural grassland? (USA grassland to cropland)
A
They disappeared
9
Q
What role do natural grasslands play in carbon management?
A
Act as a carbon sink - absorb CO2 and release O2
