Question

which is a nonpoint source of pollution?
○ tourists throw trash into the ocean.
○ a car mechanic pours oil on the ground.
○ rain contains chemicals that seep into the ground.
○ a pipe dumps waste from a factory into a stream.

Explanation:

Nonpoint source pollution comes from diffuse, unconfined sources rather than a single identifiable discharge point.

• Tourists throwing trash, a mechanic pouring oil, and a factory pipe are all single, identifiable point sources.
• Rain carrying chemicals that seep into the ground comes from a widespread, diffuse source (atmospheric deposition across an area), fitting the nonpoint source definition.

Answer:

C. Rain contains chemicals that seep into the ground.