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Which of the following methods is used for waste disposal?

(a) Dumping

(b) Gasification

(c) Incineration

(d) Open sea disposal

I had been asked this question in examination.

This key question is from Enzymes Catalyzing Pesticide Degradation Reactions in division Biodegradation of Pesticides in the Environment of Environmental Biotechnology

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Correct answer is (d) Open sea disposal

Easiest explanation: If open sea disposal method is used for disposing waste, a lot of aquatic organisms would be affected and in long run it might affect other land organisms as well, whereas, dumping is done in low lying areas, gasification is the degradation of organic matter in anaerobic conditions and incineration involves chemical reaction, all these methods doesn’t cause much damage to the environment.

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