Ranking Sources of Heavy Metal Contamination
Based on the information in the table, which of the following correctly ranks the sources of heavy metal contamination from highest to lowest relative risk?
| Source | Relative Risk for Heavy Metal Contamination |
|---|---|
| Mining | Very High |
| Urban Runoff | High |
| Industrial Discharge (Point Source) | Moderate |
| Oil Spills | Low |
A
Mining, Urban Runoff, Industrial Discharge, Oil Spills
B
Urban Runoff, Mining, Industrial Discharge, Oil Spills
C
Mining, Industrial Discharge, Urban Runoff, Oil Spills
D
Industrial Discharge, Urban Runoff, Mining, Oil Spills
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