This diagram shows a place underlain by uniform materials. Wells have been dug at A and B. Testing has shown the flow of groundwater to be 4 km/yr. If pesticides are dumped into well A, how long will it probably take before well B becomes contaminated? The vertical exaggeration on this diagram is 10x.
A. 1 year
B. 2 years
C. 4 years
D. Never, because the pesticide will not move from A to B.
Answer: B
Environmental & Atmospheric Sciences
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