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Three Arch Rocks National Wildlife Refuge
This 15-acre refuge and Wilderness supports breeding seabird colonies and boasts the only pupping site of Steller Sea Lions on the north Oregon coast.
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Characterization, Modeling, Monitoring, and Remediation
Additional copies of this report are available for sale from the National Academies Press, 500. Fifth Street, NW, Keck 360, Washington, DC 20001; (800) 624-6242
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Rock cycle
The rock cycle describes the processes through which the three main rock types (igneous, metamorphic, and sedimentary) transform from one type into another.
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