What is the main problem facing Ogallala aquifer?
a) overpumping may cause southern parts of the aquifer to go dry in the next 100 years
b) it has become contaminated with radioactive waste from the Chernobyl accident
c) precipitation is heavier to the east, causing tilting of the entire formation
d) leakage from chemical processing plants are polluting the entire aquifer
e) the groundwater is becoming more salty from water from the pacific Ocean
Answer: a) overpumping may cause southern parts of the aquifer to go dry in the next 100 years
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