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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