1.
springs form where
a. there is no water table
b. flooding makes streams overflow their banks
c. groundwater sinks into the soil
d. the water table intersects the ground surface
2.
groundwater contaminated by sewage from a ruptured septic tank can sometimes be naturally purified by flowing for a relatively short distance through a
a. sandstone aquifer
b. fractured limestone aquifer
c. cavernous limestone aquifer
d. spring where the water table intersects the ground surface
3.
a cavern is an underground chamber formed by
a. erosion
b. deposition
c. evaporation
d. runoff