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 supply organic acids that enhance the dissolution process.
D) they provide the calcium carbonate necessary for karst topography to form.
E) they lessen the impact of raindrops on the surface so the water can more rapidly flow into stream channels.