100% CORRECT WELL DETAILED
ANSWERS|LATEST
Although food production was dramatically increased during the Green Revolution of the
1950s and 1960s, the methods that were primarily developed then are not a sustainable
solution for food production any longer because _____. - ANSWER they require
increasing amount of fertilizers and pesticides
Flood and Center-Pivot irrigation systems are used for about 40% of crop production
because _____. - ANSWER water is very inexpensive for farmers so there is no
incentive to stop
About what percentage of all croplands grow food for domestic animals? -
ANSWER 80%
One serious environmental problem is that about 50% of all cattle are produced _____. -
ANSWER in CAFOs (confined animal feeding operations)
Worldwide, the use of recombinant DNA technology to modify food crops is _____. -
ANSWER controversial because of known environmental effects and unknown health
effects
Of all the water on Earth, what percentage is accessible freshwater? - ANSWER less
than 1%
1
, How do impervious surfaces like roads, parking lots and sidewalks affect water availability? -
ANSWER They slow the rate of groundwater and aquifer recharge
More water is used for _____ than anything else. - ANSWER Agriculture
Although aquifers like the Ogallala currently provide billions of gallons of water per year for
farming, this is not sustainable because _____. - ANSWER we are withdrawing the
water faster than it is being replenished
When fresh water is withdrawn from the ground in coastal areas like Florida, the aquifers
often becomes contaminated by _____. - ANSWER saltwater intrusion
Which of these is NOT a result of irrigation of agricultural land? - ANSWER increased
biodiversity
True or false: "Soil and dirt are basically the same thing." - ANSWER False
Mycorrhizal fungus that grows in crop files should be _____. - ANSWER protected and
encouraged to grow
The 10,000 square mile "dead zone" in the Gulf of Mexico is primarily caused by _____. -
ANSWER fertilizers used in fields in the midwest
Although adding nutrients to water to get algae to grow sounds like a good way to increase
fish populations, in practice, adding excess nutrients causes _____ which ultimately reduces
fish populations. - ANSWER eutrophication
If you find an area with cryptogamic crusts in a desert area, you should _____. -
ANSWER protect it because it is building soil
2
ANSWERS|LATEST
Although food production was dramatically increased during the Green Revolution of the
1950s and 1960s, the methods that were primarily developed then are not a sustainable
solution for food production any longer because _____. - ANSWER they require
increasing amount of fertilizers and pesticides
Flood and Center-Pivot irrigation systems are used for about 40% of crop production
because _____. - ANSWER water is very inexpensive for farmers so there is no
incentive to stop
About what percentage of all croplands grow food for domestic animals? -
ANSWER 80%
One serious environmental problem is that about 50% of all cattle are produced _____. -
ANSWER in CAFOs (confined animal feeding operations)
Worldwide, the use of recombinant DNA technology to modify food crops is _____. -
ANSWER controversial because of known environmental effects and unknown health
effects
Of all the water on Earth, what percentage is accessible freshwater? - ANSWER less
than 1%
1
, How do impervious surfaces like roads, parking lots and sidewalks affect water availability? -
ANSWER They slow the rate of groundwater and aquifer recharge
More water is used for _____ than anything else. - ANSWER Agriculture
Although aquifers like the Ogallala currently provide billions of gallons of water per year for
farming, this is not sustainable because _____. - ANSWER we are withdrawing the
water faster than it is being replenished
When fresh water is withdrawn from the ground in coastal areas like Florida, the aquifers
often becomes contaminated by _____. - ANSWER saltwater intrusion
Which of these is NOT a result of irrigation of agricultural land? - ANSWER increased
biodiversity
True or false: "Soil and dirt are basically the same thing." - ANSWER False
Mycorrhizal fungus that grows in crop files should be _____. - ANSWER protected and
encouraged to grow
The 10,000 square mile "dead zone" in the Gulf of Mexico is primarily caused by _____. -
ANSWER fertilizers used in fields in the midwest
Although adding nutrients to water to get algae to grow sounds like a good way to increase
fish populations, in practice, adding excess nutrients causes _____ which ultimately reduces
fish populations. - ANSWER eutrophication
If you find an area with cryptogamic crusts in a desert area, you should _____. -
ANSWER protect it because it is building soil
2
