Because the real quench distance is only the minimum figure @ TDC (which is not the point of maximum risk), and there is measurable pumping loss getting those few molecules in and out of that small space, and as the clearance expands the loss is reduced.
Why is nonpoint source pollution potentially more harmful than point source pollution? a. Nonpoint source pollution disrupts the water cycle. b. Nonpoint source pollution is difficult to regulate. c. Nonpoint source pollution comes from more than one source. d. Nonpoint source pollution is more damaging to living organisms than point source pollution. Nonpoint source pollution generally results from land runoff, precipitation, atmospheric deposition, drainage, seepage or hydrologic modification.
A point source is a single, identifiable source of pollution (Wikipedia), such as a pipe or a drain. Industrial wastes are commonly discharged to rivers and the sea in this way.onpoint sources. Non-point sources of pollution are often termed âdiffuseâ pollution and refer to those inputs and impacts which occur over a wide area and are not easily attributed to a single source.