Question

which statement best explains why proper wastewater treatment is necessary for urban areas? sewage water is filtered by natural processes wastewater is only purified by soil and rocks wastewater will not become part of the water cycle water must be fit for human use or consumption

Explanation:

1. Analyze the first option: Natural processes alone can't fully filter sewage water, especially in urban areas with high pollution, so this is incorrect.
2. Analyze the second option: Wastewater purification isn't only by soil and rocks; urban areas need proper treatment, so this is wrong.
3. Analyze the third option: Wastewater does become part of the water cycle, so this statement is false.
4. Analyze the fourth option: In urban areas, water needs to be safe for human use/consumption, so proper wastewater treatment is necessary to ensure this.

Answer:

The correct statement is: Water must be fit for human use or consumption