Which of the following is an advantage of using a subsurface flow wetland rather than a free water wetland to treat wastewater? (3 points)
i. it requires low energy inputs.
ii. it does not attract mosquitoes.
iii. it is appropriate for most climates.
i only
ii only
iii only
i and ii only
i and iii only
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Which of the following is an advantage of using a subsurface flow wetland rather than a free water w...
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