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One cause of a species becoming extinct is that it is not able to adapt to changes in its environment.
Which of the following BEST explains why the population represented in the graph decreased so rapidly?
"Population Bottleneck". Wikipedia. N.d. Web. 7 Feb. 2016. <https://en.wikipedia.org/wiki/Population_bottleneck
The loss of gene flow.
The loss of genetic variation.
The introduction of a predator.