Ducks Unlimited Final Tests Questions And Answers

Ducks Unlimited Final Tests Questions And Answers Control weeds and aerate soil - ANS Tillage is primarily used for which of the following? 20 to 40 percent - ANS 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 - ANS Select all the services grasslands provide Forest and desert - ANS Grasslands typically exist between which of the following? Lasting effects from Dust Bowl - ANS Which of the following is NOT a main threat which plagues grasslands today? True - ANS 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 - ANS Which of the following best describes the Farm Bill? Africa, Australia and South America - ANS Where are savannas typically found? To conserve soils for agricultural production - ANS 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 - ANS Why do temperate grasslands have the most fertile soil on earth? Swamp - ANS 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 - ANS Select all the factors in which a wetland is classified. Wetlands provide both commercial and recreational fisheries - ANS Wetlands are economically important due to which of the following factors? Developing agricultural land - ANS Wetlands are NOT critical for which of the following? Stopping water from naturally changing course - ANS Levees are most commonly used for which of the following? False - ANS Hurricanes do less financial damage, flood further inland and displace more people when coasts are heavily developed. Soil runoff Sedimentation - ANS Select all the following causes of degradation to a wetland. 1934 - ANS Which year was the Duck Stamp Act enacted? Theodore Roosevelt - ANS Which president enacted the Farm Bill? Temporary - ANS The hooded warbler is a ________ wetland species. Greater volume of food production for large food webs - ANS Biological productivity includes which of the following? False - ANS To be considered a wetland, the area must be covered in shallow water all year. Floodplain protection - ANS Riparian wetlands are particularly vulnerable to destruction, but serves a vital role in which of the following? Water Quality Trading - ANS Which of the following allows organizations like farmers to be paid to reduce the amount of pollution they discharge? 40 billion - ANS Recreational activities generate how much money per year? Substrate - ANS Which of the following is NOT a wetland? Clean Water Act - ANS Which of the following was enacted to restore and maintain the chemical, physical and biological integrity of the nation's waters? Biotic - ANS _________ factors effects occur through the interaction of animals, plants and other organisms.