Ducks Unlimited Exam Review Questions
Correctly Solved to Score A+
Control weeds and aerate soil - Answer Tillage is primarily used for which of the following?
20 to 40 percent - Answer How much of the earth's land surface is covered with grasslands?
Provide very important habitat for wildlife
Filter runoff from precipitation
Build deep and rich soils
Store carbon dioxide from the atmosphere - Answer Select all the services grasslands provide
Forest and desert - Answer Grasslands typically exist between which of the following?
Lasting effects from Dust Bowl - Answer Which of the following is NOT a main threat which plagues
grasslands today?
True - Answer When topsoil is lost, the loss is fairly permanent because the process to create just three
centimeters of topsoil takes about 1,000 years.
Incentives provided to landowners to conserve grassland habitats - Answer Which of the following best
describes the Farm Bill?
Africa, Australia and South America - Answer Where are savannas typically found?
To conserve soils for agricultural production - Answer Which of the following is the specific mission of
the Natural Resources Conservation Service?
Grass roots decaying below the surface enriches the soil with nutrients - Answer Why do temperate
grasslands have the most fertile soil on earth?
, Swamp - Answer A wetland with woody plants, saturated/slow moving water and a lack of oxygen in the
soil can be described as a _____.
Hydrological regime
Landscape position
Vegetation cover - Answer Select all the factors in which a wetland is classified.
Wetlands provide both commercial and recreational fisheries - Answer Wetlands are economically
important due to which of the following factors?
Developing agricultural land - Answer Wetlands are NOT critical for which of the following?
Stopping water from naturally changing course - Answer Levees are most commonly used for which of
the following?
False - Answer Hurricanes do less financial damage, flood further inland and displace more people when
coasts are heavily developed.
Soil runoff
Sedimentation - Answer Select all the following causes of degradation to a wetland.
1934 - Answer Which year was the Duck Stamp Act enacted?
Theodore Roosevelt - Answer Which president enacted the Farm Bill?
Temporary - Answer The hooded warbler is a ________ wetland species.
Greater volume of food production for large food webs - Answer Biological productivity includes which
of the following?
Correctly Solved to Score A+
Control weeds and aerate soil - Answer Tillage is primarily used for which of the following?
20 to 40 percent - Answer How much of the earth's land surface is covered with grasslands?
Provide very important habitat for wildlife
Filter runoff from precipitation
Build deep and rich soils
Store carbon dioxide from the atmosphere - Answer Select all the services grasslands provide
Forest and desert - Answer Grasslands typically exist between which of the following?
Lasting effects from Dust Bowl - Answer Which of the following is NOT a main threat which plagues
grasslands today?
True - Answer When topsoil is lost, the loss is fairly permanent because the process to create just three
centimeters of topsoil takes about 1,000 years.
Incentives provided to landowners to conserve grassland habitats - Answer Which of the following best
describes the Farm Bill?
Africa, Australia and South America - Answer Where are savannas typically found?
To conserve soils for agricultural production - Answer Which of the following is the specific mission of
the Natural Resources Conservation Service?
Grass roots decaying below the surface enriches the soil with nutrients - Answer Why do temperate
grasslands have the most fertile soil on earth?
, Swamp - Answer A wetland with woody plants, saturated/slow moving water and a lack of oxygen in the
soil can be described as a _____.
Hydrological regime
Landscape position
Vegetation cover - Answer Select all the factors in which a wetland is classified.
Wetlands provide both commercial and recreational fisheries - Answer Wetlands are economically
important due to which of the following factors?
Developing agricultural land - Answer Wetlands are NOT critical for which of the following?
Stopping water from naturally changing course - Answer Levees are most commonly used for which of
the following?
False - Answer Hurricanes do less financial damage, flood further inland and displace more people when
coasts are heavily developed.
Soil runoff
Sedimentation - Answer Select all the following causes of degradation to a wetland.
1934 - Answer Which year was the Duck Stamp Act enacted?
Theodore Roosevelt - Answer Which president enacted the Farm Bill?
Temporary - Answer The hooded warbler is a ________ wetland species.
Greater volume of food production for large food webs - Answer Biological productivity includes which
of the following?
