7/23/2023 0 Comments Tidal heating epas 105![]() biological properties such as the presence of fecal coliform bacteria and other disease-causing organisms can be measured. Describe three specific indicators of water quality used by scientists. the process by which a body of water becomes enriched in dissolved nutrients (as phosphates) that stimulate the growth of aquatic plant life usually resulting in the depletion of dissolved oxygen II. Define the term "eutrophication" and explain how water is polluted by excess nutrients. Water pollution comes from various sources some are discrete locations like a sewer pipe or from a factory (called POINT SOURCES), while others are from multiple sources over a large area like residential neighborhoods (called NONPOINT SOURCES). Distinguish between point and nonpoint sources of water pollution. Groundwater is especially susceptible to depletion because the aquifers recharge slowly and humans are using water faster than it can be replaced. when water is depleted from an aquifer, the ground can give way without any warning. Define the term "sinkhole" and tell how sinkholes develop. improving irrigation efficiency or installing low-flow faucets and toilets. List and describe eight ways to reduce water consumption. desalination, where salt is removed from seawater by distilling the water or forcing the water through membranes to filter out the salt (reverse osmosis). Tell how desalinization makes more freshwater. ![]() Although dams provide many benefits like providing power and water for drinking and irrigation, dams have negative impacts on the environment and as a result, many dams are now being removed. dam is an obstruction in a river or stream that blocks the flow of water so it can be stored in a reservoir. Explain the function of dams and tell why some dams are now being removed. Unconfined: do not have an upper layer confining them, which means they are not under as much pressure and therefore can be recharged by surface water. Confined: (artesian aquifers) are aquifers where a water-bearing layer of land is trapped between layers of substrate that is not permeable (like clay) and therefore is not easily recharged by surface water. Define the term "aquifer" and distinguish between confined and unconfined aquifers. water saturation in the root zone, at, or above the soil surface I. critical role in regulating the movement of water within watersheds as well as in the global water cycle. deep zone of an inland body of freestanding water, such as a lake or pond, located below the range of effective light penetration I. profundal zone in lake and pond ecosystems. the well-lit, open surface waters in a lake, away from the shore I. the limnetic zone in lake and pond ecosystems. ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and some sub-surface layers I. the benthic zone in lake and pond ecosystems. the part of a sea, lake or river that is close to the shore I. littoral zone in lake and pond ecosystems. Define the term "floodplain." The area of land over which a river roams and periodically floods I. Only 2.5% of all the available water on the Earth is freshwater and most of that is tied up in glaciers and ice caps. Name the location of most of the freshwater on Earth. used to help allocate resources from the Colorado River to states along the river. Describe the intent of the Colorado River Compact of 1922.
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