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Test: Middle School Life Science
1. | After many thousands of years of tectonic activity, an island splits apart and separates into two smaller islands. In the process, two populations of the same lizard species become separated and eventually, they cannot interbreed. One population even developed a slightly darker coloration. What was the result of natural selection during this extended period of time? |
a decrease in offspring viability
extinction
speciation
decreased genetic diversity
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