Explain the meaning of the three Rs of waste management and give one example of each.
Waste Generation and Management
Original Khojo Papers practice question — not from a past board paper.
Composting is the controlled aerobic decomposition of biodegradable waste by micro-organisms into a dark, crumbly, nutrient-rich manure. The waste is piled in layers in a pit with soil and moisture, turned occasionally to keep it aerated, and left for a few weeks until it has broken down.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Turning the heap matters, because anaerobic decay is slow and produces bad smells.
From the same topic and chapter, at a similar level.
Explain the meaning of the three Rs of waste management and give one example of each.
Waste Generation and Management
What is a sanitary landfill, and how does it differ from an open dump?
Waste Generation and Management
What is vermicomposting and state two of its advantages.
Waste Generation and Management
Distinguish between biodegradable and non-biodegradable waste, with two examples of each.
Waste Generation and Management
What is waste? Name three sources of waste in a town.
Waste Generation and Management
Name four cell organelles and state one function of each.
Basic Biology: The Cell