Social Science (087) — AI-generated practice question

Every litre of waste water discharged pollutes eight times the quantity of freshwater. When water is reused and recycled in two or more successive stages, the same water serves multiple purposes, reducing the total volume of fresh water drawn and the volume of polluted effluent released. Simply treating and releasing waste water still consumes fresh water continuously and generates effluent, whereas recycling conserves freshwater resources and minimises discharge, making it more sustainable.

Source: Control of Environmental Degradation, Chapter 6

• The key fact examiners expect: 1 litre of waste water pollutes 8 times the freshwater — mention this.
• The core logic: reuse/recycle = less fresh water consumed + less effluent discharged; treat-and-release still uses and wastes water continuously.
• Two marks = two distinct points. Keep it concise; no need to list all pollution-control methods.