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Question 1 of 47 4.0 Points Chapter 4: Describe different mechanisms of tolerance in organisms. Maximum number of characters (including HTML tags…

 Question 1 of 474.0 PointsChapter 4: Describe different mechanisms of tolerance in organisms.Maximum number of characters (including HTML tags added by text editor): 60,000Count Characters Show/Hide Rich-Text EditorQuestion 2 of 474.0 PointsChapter 4/Week 3: In organisms, metallothioneins are thought to function in A.the storage of metals B.the transport of metals C.the detoxification of metals D.all of the aboveReset SelectionQuestion 3 of 474.0 PointsWeek 3: Give examples of chronic toxicity from the perspective of aquatic ecosystems such as the streams around the Ely Mine.Maximum number of characters (including HTML tags added by text editor): 60,000Count Characters Show/Hide Rich-Text EditorQuestion 4 of 474.0 PointsWeek 3: Give examples of acute toxicity from the perspective of aquatic ecosystems such as the streams around the Ely Mine.Maximum number of characters (including HTML tags added by text editor): 60,000Count Characters Show/Hide Rich-Text EditorQuestion 5 of 474.0 PointsChapter 4: Define “Index of Biotic Integrity” and explain how it is used.Maximum number of characters (including HTML tags added by text editor): 60,000Count Characters Show/Hide Rich-Text EditorQuestion 6 of 474.0 PointsChapter 4/Week 3: The absence of Mayfly larvae in an aquatic ecosystem is an indication of A.Low pH B.Neutral pH C.High pHReset SelectionQuestion 7 of 474.0 PointsWeek 3: The hardness of water is a function of A.calcium B.pH C.alkalinity D.magnesium E.Choices 1 and 3 F.Choices 1 and 4Reset SelectionQuestion 8 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample EB-1 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 9 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site EB-1 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 10 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site EB-1 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 11 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample EB-2 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 12 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site EB-2 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 13 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site EB-2 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 14 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample EB-3 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 15 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site EB-3 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 16 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site EB-3 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 17 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample EB-4 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 18 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site EB-4 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 19 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site EB-4 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 20 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample SB-1 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 21 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site SB-1 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 22 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site SB-1 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 23 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample SB-2 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 24 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site SB-2 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 25 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site SB-2 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 26 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample SB-3 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 27 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site SB-3 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 28 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site SB-3 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 29 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample SB-4 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 30 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site SB-4 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 31 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site SB-4 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 32 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample SB-5 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 33 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site SB-5 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 34 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site SB-5 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 35 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample OR-1 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 36 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site OR-1 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 37 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site OR-1 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 38 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample OR-2 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 39 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site OR-2 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 40 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site OR-2 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 41 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hardness of surface water in sample OR-3 is milligrams per liter CaCO3 (mg/L CaCO3). Provide your answer to one decimal place (X.X). Question 42 of 472.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The aquatic ecosystem criterion maximum concentration (CMC) [acute surface-water toxicity limit] for copper at surface water site OR-3 is micrograms per liter (ug/L). Provide your answer to one decimal place (X.X). Question 43 of 471.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. The hazard quotient for the surface-water concentration at site OR-3 relative to the acute surface-water toxicity limit (CMC) for copper at that site is . Provide your answer to one decimal place (X.X). Question 44 of 474.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. Consider how toxicity varies with water hardness. Surface-water sample SB-1 has a hardness of 96.3 mg/L CaCO3 and you calculated the corresponding CMC above. The CMC for a hardness of half of this concentration (48.1 mg/L CaCO3) is ug/L. Provide your answer to one decimal place (X.X). Question 45 of 474.0 PointsAccepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), “E” or “e” (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. Complex numbers should be in the form (a + bi) where “a” and “b” need to have explicitly stated values. For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. Surface-water sample SB-1 has a hardness of 96.3 mg/L CaCO3 and you calculated the corresponding CMC above. The CMC for a hardness that is twice this concentration (192.5 mg/L CaCO3) is ug/L. Provide your answer to one decimal place (X.X). Question 46 of 478.0 PointsNow that you have calculated the variation of copper toxicity with water hardness, discuss how important water hardness is to determining copper toxicity.Maximum number of characters (including HTML tags added by text editor): 60,000Count Characters Show/Hide Rich-Text EditorQuestion 47 of 478.0 PointsCompare your Hazard Quotients based on the MCLs from your previous assignment with your Hazard Quotients based on the CMCs from this week. Did copper exceed the environmental criteria at the same sample sites? In general, were MCLs or CMCs exceeded farther downstream?Maximum number of characters (including HTML tags added by text editor): 60,000Count Characters

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