True, Natural selection contributes to population changes., The bottleneck effect is a sudden shift in the environment and habitat., Organisms survive because of their adaptations., Genetic drift is a process in which a small population loses an allele., Analogous structures occur because of convergent evolution., Lamark hypothesized that organisms alter their behavior based on their environment., False, Artificial selection is naturally occurring., The Hardy-Weinberg principle applies to only small populations., The founder effect is when a population stays in a large group., Organisms adapt to survive. , Vestigial structures are leftover features from an ancestor that have the same purpose today., Punctuated equilibrium is the idea that species have obvious, visual changes/.

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