Ducks Unlimited Final Tests Exam with 137 Questions and Correct Answers.
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Course
Ducks Unlimited
Institution
Ducks Unlimited
DucksUnlimitedFinalTestsExamwith137Questions and
Correct Answers.
Tillage is primarily used for which of the following? - Correct Answer Control weeds and
aerate soil
How much of the earth's land surface is covered with grasslands? - Correct Answer 20 to
40 percent
Select all the services gra...
Ducks Unlimited Final Tests Exam with 137 Questions and
Correct Answers.
Tillage is primarily used for which of the following? - Correct Answer Control weeds and
aerate soil
How much of the earth's land surface is covered with grasslands? - Correct Answer 20 to
40 percent
Select all the services grasslands provide - Correct Answer Provide very important habitat
for wildlife
Filter runoff from precipitation
Build deep and rich soils
Store carbon dioxide from the atmosphere
Grasslands typically exist between which of the following? - Correct Answer Forest and
desert
Which of the following is NOT a main threat which plagues grasslands today? - Correct
Answer Lasting effects from Dust Bowl
When topsoil is lost, the loss is fairly permanent because the process to create just three
centimeters of topsoil takes about 1,000 years. - Correct Answer True
Which of the following best describes the Farm Bill? - Correct Answer Incentives provided
to landowners to conserve grassland habitats
Where are savannas typically found? - Correct Answer Africa, Australia and South
America
Which of the following is the specific mission of the Natural Resources Conservation
Service? - Correct Answer To conserve soils for agricultural production
Why do temperate grasslands have the most fertile soil on earth? - Correct Answer Grass
roots decaying below the surface enriches the soil with nutrients
, A wetland with woody plants, saturated/slow moving water and a lack of oxygen in the soil
can be described as a _____. - Correct Answer Swamp
Select all the factors in which a wetland is classified. - Correct Answer Hydrological regime
Landscape position
Vegetation cover
Wetlands are economically important due to which of the following factors? - Correct
Answer Wetlands provide both commercial and recreational fisheries
Wetlands are NOT critical for which of the following? - Correct Answer Developing
agricultural land
Levees are most commonly used for which of the following? - Correct Answer Stopping
water from naturally changing course
Hurricanes do less financial damage, flood further inland and displace more people when
coasts are heavily developed. - Correct Answer False
Select all the following causes of degradation to a wetland. - Correct Answer Soil runoff
Sedimentation
Which year was the Duck Stamp Act enacted? - Correct Answer 1934
Which president enacted the Farm Bill? - Correct Answer Theodore Roosevelt
The hooded warbler is a ________ wetland species. - Correct Answer Temporary
Biological productivity includes which of the following? - Correct Answer Greater volume of
food production for large food webs
To be considered a wetland, the area must be covered in shallow water all year. - Correct
Answer False
Riparian wetlands are particularly vulnerable to destruction, but serves a vital role in which
of the following? - Correct Answer Floodplain protection
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