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Earth Sciences
Carolyn Capretta

Attempt 1 Written: Mar 23, 2014 4:09 PM - Mar 26, 2014 9:59AMSubmission View Released:Apr 20, 2014 12:13 PM Question 1 1 / 1 point In water treatment processes, activated carbon is used to remove: Question a) microbial options: materials inorganic b) materials organic c) materials d) all of the above Question 2 1 / 1 point Which of the following is used in the first stage of the water treatment process? Question a) primary settlement options: tank b) screen c) biofil m all of the d) above Question 3 1 / 1 point What factors need to be considered when setting a price for water? Question costs for options: a) transmission b) costs for treatment costs for c) maintenance costs for d) distribution e) all of the above Question 4 1 / 1 point The largest demand on water is by activities that do not require potable water. Question a) True options: b) False Question 5 1 / 1 point The indirect use value: Question is the value related to the present or future by options: a) individuals b) is the value attributed by individuals who have knowledge that a resource will be available for future use is the value associated with the benefits derived from the knowledge of how a natural c) resource is maintained refers to the benefits derived from ecosystem d) functions Question 6 1 / 1 point Arapid gravity filter can treat flow velocities between: Question options: a) 1 and 10 m/hr b) 4 and 21 m/hr c) 5 and 15 m/hr d) 6 and 22 m/hr Question 7 1 / 1 point Which membranes have the largest pore size? Question a) reverse osmosis options: b) ultrafiltration c) microfiltration d) nanofiltration Question 8 1 / 1 point Wetlands provide the service of nutrient cycling, which accordng to the Millenium EcosystemAssessment (MEA) is categorized as a: Question options: a) provisioning service b) regulating service c) cultural service d) supporting service Question 9 1 / 1 point The market valuation approach that measures the expenditure incurred in order to avert damage to the natural environment, human infastructure, or human health is: Question a) the replacement/restoration technique options: b) the production factor method c) the dose-response technique d) the preventive expenditure technique Question 10 1 / 1 point The process of sludge treatment and handling accounts for up to what percentage of the total costs of treatment? Question options: a) 50% b) 60% c) 70% d) 80% Question 11 1 / 1 point Why did theAral Sea dry up? The water was diverted for irrigation Question options: Climate change reduced precipitation Damming caused reduced flow to the area Isostatic rebound caused change in local topography All of the above Question 12 1 / 1 point Which of the following lakes is the most likely to undergo eutrophication? Lake Erie Question options:
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