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why did the ecosystem in the yellow stone river valley change so much from the mid-1920s to the mid-1990's?
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Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.
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why did the ecosystem in the yellow stone river valley change so much from the mid-1920s to the mid-...
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