and Answers 100% Pass
Control weeds and aerate soil - ✔✔Tillage is primarily used for which of the following?
20 to 40 percent - ✔✔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 - ✔✔Select all the services grasslands
provide
Forest and desert - ✔✔Grasslands typically exist between which of the following?
Lasting effects from Dust Bowl - ✔✔Which of the following is NOT a main threat which
plagues grasslands today?
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.
Incentives provided to landowners to conserve grassland habitats - ✔✔Which of the
following best describes the Farm Bill?
Africa, Australia and South America - ✔✔Where are savannas typically found?
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, To conserve soils for agricultural production - ✔✔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 - ✔✔Why do
temperate grasslands have the most fertile soil on earth?
Swamp - ✔✔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 - ✔✔Select all the factors in which a wetland is classified.
Wetlands provide both commercial and recreational fisheries - ✔✔Wetlands are
economically important due to which of the following factors?
Developing agricultural land - ✔✔Wetlands are NOT critical for which of the
following?
Stopping water from naturally changing course - ✔✔Levees are most commonly used
for which of the following?
False - ✔✔Hurricanes do less financial damage, flood further inland and displace more
people when coasts are heavily developed.
Soil runoff
Sedimentation - ✔✔Select all the following causes of degradation to a wetland.
1934 - ✔✔Which year was the Duck Stamp Act enacted?
Theodore Roosevelt - ✔✔Which president enacted the Farm Bill?
Temporary - ✔✔The hooded warbler is a ________ wetland species.
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