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What is the process of converting organic waste into manure?

Answer and explanation

Correct answer: Composting

The governing concept is composting, a biological method of managing biodegradable waste. Materials such as dry leaves, vegetable peels, grass, and food leftovers are placed under conditions where microorganisms decompose them. With suitable moisture, air, and time, the material changes into a dark, relatively stable substance rich in organic matter, commonly used as compost or manure to improve soil structure. Therefore option B is correct. Evaporation changes liquid water into vapour, mining extracts minerals from the Earth, and desalination removes salts from water; none of these processes converts organic waste into manure. Composting also diverts useful material from landfills.

Related tags

CompostingOrganic WasteBiodegradable WasteManureWaste ManagementUrban Waste DisposalGeographical Perspective On Selected Issues And ProblemsGeography

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