Multiple choice ___ comes from one specific site, for example, a major chemical spill. Water Pollution Point-source pollution nonpoint-source pollution Nuclear pollution Reveal answer Fill a bubble to check yourself B Correct answer Explanation Point-source pollution refers to contaminants that enter the environment from a single, identifiable location, such as a pipe or a specific industrial site. Nonpoint-source pollution, by contrast, comes from many diffuse sources like runoff.