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Read the following scenarios. Then explain how natural selection could occur in each. Include the four principles of natural selection (overproduction of offspring, adaptation, variation, and descent with modification) as well as what condition(s) drive natural selection.
3. . Polar bears tend to have varying thickness in coats: some are
thin, some are medium, and some are thick. Due to global
warming, temperatures have been slowly rising over time. Most
of the bears have 2 cubs a breeding season, but only 1 survives
the changing temperatures.
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