Question

Which statements are true about point and nonpoint source pollution? Human activity causes point and nonpoint source pollution. Only nonpoint source pollution affects abiotic factors in a watershed. Point source pollution affects only the part of the lake or river near it. Both point and nonpoint source pollution affect biotic factors in a watershed. Point pollution flows through the bodies of water in a watershed but not through its land.

Answer 1

Answer:

Human activity causes point and nonpoint source pollution.

Both point and nonpoint source pollution affect biotic factors in a watershed.

Explanation:

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Answer 2

Answer:

Both point source pollution and non-point source pollution affect biotic factors in a watershed.

Explanation:

• Point source pollution is the "single identifiable source" from which the pollutants arise. They can be pipe, factory, ship etc.

• Few factories discharge the pollutants directly into the water bodies. Few of them treat it first and then discharge to the sewage plants.  

• Nonpoint source pollution results from "land runoff, drainage, atmospheric deposition". After the runoff, the human made pollutants and natural ones will get deposited into wet lands, lakes and ground waters.