Plants Are Important to the Development of Karst Primarily Because

Multiple Choice

Plants are important to the development of karst primarily because

A) openings adjacent to their roots serve as microchannels that allow water to enter the rock.
B) the decay of large roots below the surface produces cavities which eventually enlarge to form caves.
C) they produce acids.
D) plants play no role in the development of karst.
E) they protect the surface so that solution can happen beneath.