FOAM and the biologists from humboldt state university, california created an integrated waste water treatment, they use plants for purify mainly :-
A
Sludge from water
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B
Nitrate and phosphate from water
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C
Heavy metals from water
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D
All of the above
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Solution
The correct option is A Sludge from water The main purpose of FOAM is to treat wastewater around a place called Arcata and the surrounding bay through a natural system.