Theory question 304
Underground Water and Karst(a) List: (i) three surface features of a limestone region; (ii) four underground features of a limestone region. (b) Outline four benefits of limestone region.
Show the model answer
Model answer
(a)(i) Swallow holes (sinkholes); dolines; uvalas; poljes; clints and grikes (limestone pavement); dry valleys; gorges.
(ii) Caves and caverns; stalactites; stalagmites; pillars (columns); underground rivers and lakes.
(b) Raw material for cement; lime for agriculture and industry; building stone; tourist attractions (caves); grazing land; underground water supply; marble from metamorphosed limestone.
Explanation
Separate surface from underground features.