Which of the following statements is not true?
A) Chemical treatment of sediment can be effective in reducing pollution problems, but it must be repeated every few years
B) Fast-flowing streams are generally better aerated than are lakes
C) A body of water is described as "dead" when it contains fatal concentrations of toxic chemicals
D) An oxygen sag curve describes changes in a stream's dissolved oxygen content along its length below an organic-matter source
Correct Answer:
Verified
Q20: Groundwater pollution
A) Comes only from non-point pollution
Q21: Because groundwater flow rates are often slow,groundwater
Q22: Given the quantitative definition of residence time,the
Q23: The escape of nutrients from sediments can
Q24: Water containing an abundance of nutrients,which encourages
Q26: Dumping lawn clippings into a stream will
Q27: What develops as a result of migration
Q28: Ground water contaminated with acid rain percolates
Q29: The pump-and-treat method is
A) The surface treatment
Q30: Pump and treat technique is used for
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