Fact 1: Flowing water can slowly dissolve carbon in sedimentary rock.

Fact 2: Rivers and streams are bodies of fresh, flowing water.

Given the two facts above, answer the question "What can slowly dissolve carbon in sedimentary rock?" with the following options: 
- hydrocarbons
 - acetic acid
 - precipitation
 - evaporation
 - rivers and streams
 - puddles
 - ponds
 - nitrogen


 

     rivers and streams    