Environment & Ecology · Environment
What is the primary source through which common disease-causing agents like E. coli and Salmonella are introduced into water bodies?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Agricultural runoff and fertilizers
- 2Industrial drains and chemical effluents
- 3Untreated sewage and domestic waste✓
- 4Deforestation and soil erosion
Correct answer
Untreated sewage and domestic waste
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