Grizzly bears roamed the North Cascades of Washington for thousands of years but have disappeared more recently.
The NPS said that for the next five to 10 years, it will introduce between three and seven grizzly bears a year to get the area's initial population to at least 25. The goal is to have 200 grizzly bears live in the region within the next 60-100 years. Advocates say grizzly bears play an important role in the area's ecosystem. The NPS said grizzly bears help distribute seeds and keep other wildlife populations in balance.
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