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
E)a zone of air between the ground surface and water table

Question

Quizplus · Accepted Answer

Karst topography primarily forms in regions where there is a high proportion of calcium carbonate in the rock, which dissolves more easily in water, especially if it is slightly acidic. Joints in the rock facilitate the movement of water, and a zone of air (vadose zone) between the ground surface and water table allows for the formation of caves and other karst features. Vegetation can contribute to the carbon dioxide in soil, which helps form the weak acid that dissolves limestone. Arid conditions, however, are not necessary for karst development; in fact, water is a critical component in the chemical weathering process that forms karst landscapes.

Which of the Following Is Not Necessary for Well-Developed Karst