23. Dredging is done to wipe out-
O contaminated microorganisms
o
O contaminated radionuclides
o contaminated sediments
Ocontaminated toxins
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Explanation:
Dredging is the process of removing the sediment from a water body (reservoir or channel), transporting, and depositing it at another location far away.
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Dredging is done to wipe out - contaminated sediments.
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