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Q.What is bioremediation ? Give an example of bioremediation.

Puducherry TnboardTamil Nadu HSC (DGE) Board 2026Subjective· 3mImportance★★★★★
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Bioremediation uses living organisms (mainly microbes) to clean up pollutants, exemplified by oil-degrading bacteria used to treat oil spills.

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Bioremediation is a biotechnological approach to environmental clean-up that uses living organisms -- most commonly bacteria and fungi, but also plants (in the related process of phytoremediation) -- to degrade, detoxify, or remove harmful pollutants from contaminated soil, water, or air. The organisms used typically metabolise the pollutant as a source of carbon or energy, breaking it down through their normal metabolic pathways into simpler, less toxic, or completely harmless end-products (such as carbon dioxide and water), so that the contaminated site is progressively restored without physically removing and disposing of the polluted material elsewhere.

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