kids north face backpack ecause there's no connection to any other body of water. So they are left with, 'adapt or die,'" Hausner said.The scientists used fiber-optic cable with temperature-sensing equipment to monitor temperature changes in the cavern's water. The research team, which included the National Park Service and the U.S. Geological Society, combined climate projections, water-circulation models and ecological studies to project the impact climate change could have on the pupfish.The pupfish was declared endangered in 1967. In 1972, the pupfish population was estimated at 553, but dropped to 171 a decade ago. Last year, the count was as low as 35, the stud
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