Will there be negative effects on the aquatic ecosystem?
The Ganges River, shown in Figure 4.66, has an annual average flow rate of 12,105 m3/s. The average temperature of the Ganges River was reported to be 24.6ºC. The Ganges has become contaminated with raw sewerage and industrial waste so that the dissolved oxygen in the river upstream of sewerage discharges is 4.6 mg/L. Suppose that the raw sewerage that is untreated flows into the Ganges at a rate of 460 m3/s, the temperature is 25ºC, and the dissolved oxygen in the sewerage stream is completely depleted (i.e. DO = 0). How would you develop a plan for improving water quality in the Ganges River?
What will be an ideal response?
DO will eliminate any fish or species that require DO, severely decreasing biodiversity
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La prueba que muchos inge- nieros consideran la prueba de campo más exacta para comprobar la densidad del suelo es la prueba _____.
a. del cono de arena b. de densidad nuclear c. de gravedad específica d. de dureza
Three important considerations entering into the selection of a fertilizer proportioner for a greenhouse range are:
What will be an ideal response?
A locking hub is a type of clutch that engages the outer ends of the axle shafts from the wheel hub.
Answer the following statement true (T) or false (F)
Which act or organization regulates air conditioning refrigerant?
A) Code of Federal Regulations (CFR) B) MSDS C) WHMIS D) Clean Air Act (CAA)