After a copper smelter begins operation, local populations of plants downwind of the plant begin to adapt to the resulting air pollution. Scientists document, for example, that the acid tolerance of several plant species has increased significantly in the polluted area. This is an example of a response to:.
a) stabilizing selection.
b) heterozygote advantage.
c) disruptive selection.
d) genetic drift.
e) directional selection.
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After a copper smelter begins operation, local populations of plants downwind of the plant begin to...
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