Ducks Unlimited Final tests
Study online at https://quizlet.com/_7kyjzc
1. Control weeds and aerate soil: Tillage is primarily used for which of the follow-
ing?
2. 20 to 40 percent: How much of the earth's land surface is covered with grass-
lands?
3. Provide very important habitat for wildlife
Filter runoff from precipitation
Build deep and rich soils
Store carbon dioxide from the atmosphere: Select all the services grasslands
provide
4. Forest and desert: Grasslands typically exist between which of the following?
5. Lasting effects from Dust Bowl: Which of the following is NOT a main threat
which plagues grasslands today?
6. True: When topsoil is lost, the loss is fairly permanent because the process to
create just three centimeters of topsoil takes about 1,000 years.
7. Incentives provided to landowners to conserve grassland habitats: Which of
the following best describes the Farm Bill?
8. Africa, Australia and South America: Where are savannas typically found?
9. To conserve soils for agricultural production: Which of the following is the
specific mission of the Natural Resources Conservation Service?
10. Grass roots decaying below the surface enriches the soil with nutrients: -
Why do temperate grasslands have the most fertile soil on earth?
11. Swamp: A wetland with woody plants, saturated/slow moving water and a lack
of oxygen in the soil can be described as a _____.
12. Hydrological regime
Landscape position
Vegetation cover: Select all the factors in which a wetland is classified.
13. Wetlands provide both commercial and recreational fisheries: Wetlands are
economically important due to which of the following factors?
14. Developing agricultural land: Wetlands are NOT critical for which of the follow-
ing?
15. Stopping water from naturally changing course: Levees are most commonly
used for which of the following?
16. False: Hurricanes do less financial damage, flood further inland and displace
more people when coasts are heavily developed.
17. Soil runoff
Sedimentation: Select all the following causes of degradation to a wetland.
18. 1934: Which year was the Duck Stamp Act enacted?
19. Theodore Roosevelt: Which president enacted the Farm Bill?
20. Temporary: The hooded warbler is a ________ wetland species.
1/7
, Ducks Unlimited Final tests
Study online at https://quizlet.com/_7kyjzc
21. Greater volume of food production for large food webs: Biological produc-
tivity includes which of the following?
22. False: To be considered a wetland, the area must be covered in shallow water
all year.
23. Floodplain protection: Riparian wetlands are particularly vulnerable to destruc-
tion, but serves a vital role in which of the following?
24. Water Quality Trading: Which of the following allows organizations like farmers
to be paid to reduce the amount of pollution they discharge?
25. 40 billion: Recreational activities generate how much money per year?
26. Substrate: Which of the following is NOT a wetland?
27. Clean Water Act: Which of the following was enacted to restore and maintain
the chemical, physical and biological integrity of the nation's waters?
28. Biotic: _________ factors effects occur through the interaction of animals,
plants and other organisms.
29. Index of population size: Which of the following methods for measuring pop-
ulations utilizes recording signs of animals, such as droppings, tracks, nest counts,
etc.?
30. Putting up fences: Which of the following is a means of manipulating wildlife
habitats?
31. Limited-carrying capacity: Emigration can be due to a habitat's
_____________.
32. 1,000: Death rate is expressed as the number of deaths per how many individ-
uals per unit of time?
33. True: Disease is an biotic factor.
34. False: Fertility refers to the number of offspring produced
35. False: Recruitment is NOT affected by immigration.
36. False: Dominance occurs when one individual achieves preferential access to
resources, including food, cover and mates over other individuals. This may be
achieved through submission or smaller body size.
37. Parasitism: Which of the following is a biotic factor which may impact wildlife
populations?
38. Independent and dependent: Density is divided into which of the two factors?
39. Paint: Which of the following is NOT a permanent mark used in the mark and
recapture technique?
40. True: Most permits are regulated to scientific, educational or propagation pur-
poses.
41. Locate a mate: Which of the following is an essential reason why wildlife species
have home ranges?
2/7
Study online at https://quizlet.com/_7kyjzc
1. Control weeds and aerate soil: Tillage is primarily used for which of the follow-
ing?
2. 20 to 40 percent: How much of the earth's land surface is covered with grass-
lands?
3. Provide very important habitat for wildlife
Filter runoff from precipitation
Build deep and rich soils
Store carbon dioxide from the atmosphere: Select all the services grasslands
provide
4. Forest and desert: Grasslands typically exist between which of the following?
5. Lasting effects from Dust Bowl: Which of the following is NOT a main threat
which plagues grasslands today?
6. True: When topsoil is lost, the loss is fairly permanent because the process to
create just three centimeters of topsoil takes about 1,000 years.
7. Incentives provided to landowners to conserve grassland habitats: Which of
the following best describes the Farm Bill?
8. Africa, Australia and South America: Where are savannas typically found?
9. To conserve soils for agricultural production: Which of the following is the
specific mission of the Natural Resources Conservation Service?
10. Grass roots decaying below the surface enriches the soil with nutrients: -
Why do temperate grasslands have the most fertile soil on earth?
11. Swamp: A wetland with woody plants, saturated/slow moving water and a lack
of oxygen in the soil can be described as a _____.
12. Hydrological regime
Landscape position
Vegetation cover: Select all the factors in which a wetland is classified.
13. Wetlands provide both commercial and recreational fisheries: Wetlands are
economically important due to which of the following factors?
14. Developing agricultural land: Wetlands are NOT critical for which of the follow-
ing?
15. Stopping water from naturally changing course: Levees are most commonly
used for which of the following?
16. False: Hurricanes do less financial damage, flood further inland and displace
more people when coasts are heavily developed.
17. Soil runoff
Sedimentation: Select all the following causes of degradation to a wetland.
18. 1934: Which year was the Duck Stamp Act enacted?
19. Theodore Roosevelt: Which president enacted the Farm Bill?
20. Temporary: The hooded warbler is a ________ wetland species.
1/7
, Ducks Unlimited Final tests
Study online at https://quizlet.com/_7kyjzc
21. Greater volume of food production for large food webs: Biological produc-
tivity includes which of the following?
22. False: To be considered a wetland, the area must be covered in shallow water
all year.
23. Floodplain protection: Riparian wetlands are particularly vulnerable to destruc-
tion, but serves a vital role in which of the following?
24. Water Quality Trading: Which of the following allows organizations like farmers
to be paid to reduce the amount of pollution they discharge?
25. 40 billion: Recreational activities generate how much money per year?
26. Substrate: Which of the following is NOT a wetland?
27. Clean Water Act: Which of the following was enacted to restore and maintain
the chemical, physical and biological integrity of the nation's waters?
28. Biotic: _________ factors effects occur through the interaction of animals,
plants and other organisms.
29. Index of population size: Which of the following methods for measuring pop-
ulations utilizes recording signs of animals, such as droppings, tracks, nest counts,
etc.?
30. Putting up fences: Which of the following is a means of manipulating wildlife
habitats?
31. Limited-carrying capacity: Emigration can be due to a habitat's
_____________.
32. 1,000: Death rate is expressed as the number of deaths per how many individ-
uals per unit of time?
33. True: Disease is an biotic factor.
34. False: Fertility refers to the number of offspring produced
35. False: Recruitment is NOT affected by immigration.
36. False: Dominance occurs when one individual achieves preferential access to
resources, including food, cover and mates over other individuals. This may be
achieved through submission or smaller body size.
37. Parasitism: Which of the following is a biotic factor which may impact wildlife
populations?
38. Independent and dependent: Density is divided into which of the two factors?
39. Paint: Which of the following is NOT a permanent mark used in the mark and
recapture technique?
40. True: Most permits are regulated to scientific, educational or propagation pur-
poses.
41. Locate a mate: Which of the following is an essential reason why wildlife species
have home ranges?
2/7
