Final answer:
Point pollution has a specific, identifiable source, whereas nonpoint pollution comes from many dispersed sources over a wide area, making control and cleanup more challenging.
Step-by-step explanation:
The difference between point pollution and nonpoint pollution is that point pollution has a clear source, while nonpoint pollution comes from multiple sources. Point source pollution refers to contamination that enters a waterway or water body through a single site, such as untreated sewage or leaking underground tanks.
Nonpoint source pollution, on the other hand, occurs when small amounts of contaminants collect from a large area, such as fertilizer runoff from agricultural fields or oil and animal waste from urban areas.