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Ecologists have long observed predators pursue disproportionately more of a plentiful prey species, and less of scarce prey, but change to the latter if it becomes relatively more abundant. Known as “...
Long loathed as a threat and nuisance, the wolf population in Yellowstone National Park was essentially wiped out by the mid 1920s. That changed in 1995, when the National Park Service reintroduced wo...

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