NEET Practice Questions

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How did a citizen group called Friends of Arcata Marsh,          (2 marks)

Arcata, California, USA, help to improve water quality

of the marshland using Integrated Waste Water Treatment ?

Explain in four steps.


(i) Water is treated by conventional method / sedimentation /     (2 marks)

filtration / chlorination

(ii) Water flows to six connected marshes

(iii) The water in marshes is seeded with appropriate plants /

algae / fungi / bacteria

(iv) Which helps to neutralise the pollutants / assimilate the pollutants /

absorb pollutants / Remove heavy metals