AP Environmental Sciencemediummcq1 pt
The leading source of US water pollution today is
A.agricultural nonpoint runoff
B.factory pipes
C.oil tankers
D.sewage plants
Explanation
Core Concept
Fertilizer, manure, and sediment washing off farmland now pollute more water than regulated point sources — the CWA's unfinished business.
Correct Answer
Aagricultural nonpoint runoff
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