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name Annemarie M. status student age 15 Question - What is the normal differences between oxygen levels in saltwater and freshwater? ----------------- Annemarie, In a normal freshwater stream, one wants to ideally have a dissolved oxygen (DO) concentration of at least 6 ppm or greater. ... Waters with high amounts of salt,
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www.newton.dep.anl.gov/askasci/chem03/chem03339.htm
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The oxygen dissolved in lakes, rivers, and oceans is crucial for the organisms and creatures living in it. As the amount of dissolved oxygen drops below normal levels in water bodies, the water quality is harmed and creatures begin to die off.
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ga.water.usgs.gov/edu/characteristics.html
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What is "Normal" for Dissolved Oxygen? ... If the DO values in rivers are below 90%, there may be large amounts of oxygen demanding materials. Many factors contribute to how high or low a DO level may be. Water temperature is one of the causes. Oxygen and other gases dissolve more easily in cooler water than in warmer water.
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www.switzerland.k12.in.us/watershed/do.html
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Differences among PaO2, SaO2 and Oxygen Content ... The Arterial oxygen content is shown for two hemoglobin vaues, 15 gm/dl and 10 gm/dl. The relationship between SaO2 and CaO2 for any given hemoglobin content is linear (excluding the minor influence of dissolved oxygen with normal PO2 values).
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www.lakesidepress.com/pulmonary/ABG/PO2.htm
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Why Dissolved Oxygen is Important ... A good level of dissolved oxygen Is essential for aquatic life. ... Dissolved Oxygen Testing Field Kit Information...
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www.state.ky.us/nrepc/water/wcpdo.htm
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What are temperature and dissolved oxygen? This PEARL Lakes Guide water quality page discusses temperature and dissolved oxygen in Maine lakes. ... Dissolved Oxygen (DO) is the measure of the amount of oxygen dissolved in the water. All living organisms, except for certain types of bacteria, need oxygen to survive.
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www.pearl.maine.edu/windows/community/Water_Ed/Dissolve...
www.pearl.maine.edu/windows/community/Water_Ed/Dissolved%20Oxygen/DO_whatisit.htm
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The dissolved oxygen (DO) is oxygen that is dissolved in water. The oxygen dissolves by diffusion from the surrounding air; aeration of water that has tumbled over falls and rapids; and as a waste product ... When these plants die, they become food for bacteria, which in turn multiply and use large amounts of oxygen.
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www.lenntech.com/why_the_oxygen_dissolved_is_important....
www.lenntech.com/why_the_oxygen_dissolved_is_important.htm
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The amount of dissolved oxygen an animal needs varies by species, time of year and life stage. ... High amounts of nutrients in the water, called nutrient pollution, can fuel the growth of excessive algae, or algae blooms. A portion of the algae is consumed by filter feeders like oysters and menhaden.
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www.chesapeakebay.net/dissolvedoxygen.aspx?menuitem=146...
www.chesapeakebay.net/dissolvedoxygen.aspx?menuitem=14654
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Oxygen Minifact & Analysis Sheet Spring Harbor Environmental Magnet Middle School; Page #1 © James E. Kotoski, 1997; Information on Available Amounts of Oxygen for Living Organisms; 1. Some basic facts: A. Cold water is heavier than warm water and B. Cold water can hold much more dissolved oxygen than can warm water.
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tellus.ssec.wisc.edu/outreach/teach/ideas/kotoski/Minif...
tellus.ssec.wisc.edu/outreach/teach/ideas/kotoski/Minifact_Sheets/Minifact4_Dissolved_Oxygen.pdf
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