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:

Non - point source pollution comes from diffuse sources. Tourists throwing trash, a mechanic pouring oil, and a pipe dumping waste are point - source (specific, identifiable sources). Rain containing chemicals seeping into the ground is a non - point source as it is a widespread, non - specific source of pollution.

Answer:

Rain contains chemicals that seep into the ground.