Question

Microbes are used in cleaning environment. They are used in

• A. Oil spills
• B. Waste Water Treatment Plant
• C. Preparing compost
• D. All the above

Answer 1

The correct option is D All the above

Microorganisms help in cleaning up the environment. They decompose dead and decaying matter from plants and animals, convert them into simpler substances which are later used up by other plants and animals.
Anaerobic bacteria are used in wastewater treatment on a normal basis. The main role of these bacteria in sewage treatment is to reduce the volume of sludge and produce methane gas from it.
Some bacteria are known as hydrocarbon degrading bacteria like Pseudomonas can digest the hydrocarbons in oil. They are widely used in oil spill bioremediation.