Final answer:
Point source pollution comes from single identifiable sources, while nonpoint source pollution is from widespread, multiple sources. Nonpoint source pollution is harder to control due to its diffuse nature and numerous origins.
Explanation:
Point source pollution originates from single, identifiable sources such as discharge pipes, while nonpoint source pollution comes from diffuse, multiple sources like urban areas and agricultural fields. Nonpoint source pollution is challenging to control due to its widespread nature, low concentration, and numerous origins.
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