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- Where does your drinking water come from? An aquifer or an aboveground reservoir? What area is included within your watershed? Visit the Science in Your Watershed site at http://water.usgs.gov/wsc to find out.9. The chemistry of aquatic ecosystems is determined by the a. Amount of sats, nutrients, and oxygen dissolved in the water. b. Number of organisms present in the water. C. Amount of rainfallthe water receives. d. Biotic and abiotic factors in the water.6. Which allows a variety of life to thrive in estuary ecosystems? A the temperature fluctuations B. the mixture of freshwater and salt water C. the dissolved nutrients that enter from nearby farms D. the constant movement of water that keeps the water cloudy
- 42. Which of the following aquatic biomes is exposed to both freshwater and salt-water, is subject to high tides and low tides, and is rich in nutrients (resulting in fairly high biodiversity)? A. the open ocean B. the coastal ocean C. streams and rivers D. lakes and ponds E. the estuaries1. Which of the following lake would be in the latest successional stage? A. with no submerged vegetation B. has submerged vegetation near the shore C. with emergent vegetation found in all parts of the lake D. has emergent vegetation near the shore Please answer it ASAP. Thanks in advance ?5. In Earth's water cycle, which of the following reservoirs contains the smallest amount of water, and for only a short period of time (usually less than one day for one molecule of H;O)? A. groundwater, in soils B. ice and snow, in glaciers and polar icecaps C. atmospheric water D. surface water, in lakes, rivers, and oceans E. water in deep rocks
- 12. A lake has suddenly become more cloudy, has decreased algae growth, and contains less dissolved oxygen. The lake has most Ilkely received runoff that contains large amounts of which substance? A sodium B. acid rain C. nitrogen D. sediment1.What single factor has the greatest effect on how much water a person uses (i.e. how much does one use on a daily or annual basis)? 2.When studying aquatic ecosystems why is it important to understand physical (abiotic) aspects of the environment.A key feature of estuaries is: a. low light conditions and high productivity b. salt water and fresh water c. frequent algal blooms d. little or no vegetation
- Which of the following does not vary predictably with the depth ofthe aquatic environment?a. dissolved oxygen b. temperature c. penetration by sunlight d. salinity7. Analyzing relationship: Describe the relationship between ground water and surface water in a watershed. what human activities in a recharge zone can affect the ground waterThelargest reservoir of phosphorus in most ecosystems is phosphorus:a. inthe atmosphere.b.dissolved in water.c. inrocks and sediments.d.bound in animal tissues.e.bound in plant tissues.