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Anadromous Salmonds

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Anadromous salmonids, which travel between freshwater and saltwater, is an example of how habitat loss can change evolutionary patterns. Dams constructed for hydroelectric power generation are blocking the access for these fishes, but culverts and river engineering have also reduced the amount of habitat that anadromous fishes can use (Furniss et al. 1991; NRC 1996). These results suggest that loss of habitat will alter evolutionary patterns in salmonid populations. Lastly, global warming results from human activities that cause an increase in the amount of greenhouse gases in the atmosphere, which confines the atmosphere's functional capacities, including regulating temperature and weather patterns. polar bears are supremely adapted to live,

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