Plants are important to the development of karst primarily ...

[Davideckstein7]

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) None of the aboveplants play no role in the development of karst.

Question 2

Which of the following is not necessary for well-developed karst to develop?
 
  A) high proportion of calcium carbonate in the rock
  B) joints in rock of otherwise low permeability
  C) vegetation
  D) arid conditions

[uniquea123]

Answer to Question 1

C

Answer to Question 2

D