What might be carried by runoff from an underground mine? 

A)  exotic species 
B)  sulfuric acid 
C)  soil nutrients 
D)  carbon dioxide

Sulfuric Acid

A highly corrosive strong mineral acid with molecular formula H2SO4, widely used in industry.

Runoff

Water from rain, snowmelt, or other sources that flows over the land surface and is not absorbed into the ground, potentially carrying pollutants to bodies of water.

Underground Mine

A type of mine where natural resources, like minerals or ores, are extracted from beneath the Earth's surface through tunnels or shafts.