Question

Many scientists are concerned that the Ogallala aquifer in the United States is being depleted at an alarming rate. What would most likely be a major effect of this aquifer running dry?
Many crops would die because irrigation water would be limited.
The water cycle would come to a halt in the area.
Farmers would have to water crops with salt water.
Most people in the United States would not have drinking water.

Answer 1

Many crops would die because irrigation water would be limited.

The Ogallala (High Plains) aquifer supplies irrigation water for a large agricultural region; if it ran dry crop irrigation and yields would be severely reduced. The other choices are incorrect: the water cycle would not stop, most U.S. drinking water does not come from the Ogallala, and inland farmers would not realistically switch to seawater.