Q.Distinguish between point-source and non-point-source (diffuse) water pollution, giving one realistic example of each.

Point-source water pollution enters a water body from a single, identifiable outlet -- for example, a pipe carrying untreated sewage or industrial effluent that discharges directly into a river at one fixed location. Because the source is a single identifiable point, it is comparatively straightforward to monitor, regulate, and require treatment for before discharge. Non-point-source (or diffuse) pollution, in contrast, has no single outlet at all; it accumulates from many small, scattered contributions spread across a wide area -- for example, fertiliser and pesticide residues washed off many separate farm fields by rainfall, or oil and debris washed off city streets into storm drains. Because it arrives from so many directi …

Give one concrete, realistic example of each category so the distinction between 'single outl …

Assuming all industrial pollution is automatically point-source -- if it is airborne fallout spread over a wide catchment rather …