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(D) The project to treat wastewater by combining artificial and natural processes was carried out in $Arcata$,California. This integrated approach inv

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Arcata

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(D) The project to treat wastewater by combining artificial and natural processes was carried out in $Arcata$,California. This integrated approach involved a two-stage process: $1$. The conventional sedimentation,filtering,and chlorine treatments were performed first (artificial process). $2$. To neutralize heavy metals and pollutants,the water was then passed through a series of $60$ hectares of marshland where appropriate plants,algae,fungi,and bacteria were seeded,which neutralized,absorbed,and assimilated the pollutants (natural process).

Where was the attempt to treat wastewater by combining artificial and natural processes carried out?

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