Biology, 30.01.2020 08:50 zaniyastubbs9

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each population of squirrels evolved different adaptations for each side of the canyon and eventually became genetically different populations. this is an example of which stage of speciation?

a) the population became adapted to different environments and eventually become so different that they cannot interbreed to produce fertile offspring.

b) the populations have been isolated and thus do not interbreed.

c) the populations become adapted to different environments but will still be able to interbreed, but the offspring will not be fertile.

d) the populations become totally separated from one another.

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