After a major rainstorm in a humid climate and with no overland flow to a stream, why does the stream level rise almost immediately?
a. Groundwater seeps down to raise the water table and forces older groundwater out into the stream.
b. The groundwater moves very fast, through porous ground, to the stream.
c. The stream rise comes from farther up the drainage basin.
d. Actually it doesn’t rise rapidly; it merely seems like it does.
e. The groundwater displaces older groundwater in the stream, over the water table.
ANSWER: a
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