The effects of land subsidence due to groundwater extraction are generally ____.
A) problems for a period of months, until more groundwater seeps in to deep clays
B) permanent and irreversible
C) in effect for several years, until major storms irrigate the area
D) reversible by returning water to the aquifer
E) unpredictable and impossible to plan for effectively
Correct Answer:
Verified
Q2: What creates caverns in limestone rock?
A)Underground streams
Q3: Rainwater becomes acidic as it dissolves limestone.
Q4: Sinkholes appear suddenly, and cannot be detected
Q5: In order for limestone to collapse to
Q6: Sinkholes are triggered when the groundwater level
Q8: Limestone consists of rock made from _.
A)carbon
Q9: The uneven, potholed surface of karst is
Q10: Soils with a high smectite clay composition
Q11: Land subsidence increases the hazard of _.
A)earthquakes
B)hurricanes
C)landslides
D)drought
E)flooding
Q12: Swelling soils can lead to saltwater intrusion
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