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https://en.wikipedia.org/wiki/ice%20age

Period of long-term reduction in temperature of Earth's surface and atmosphere An artist's impression of ice age Earth at Pleistocene glacial maximum An ice age is a period of time when the lower temperature of Earth 's surface and atmosphere results in the presence or expansion …

https://en.wikipedia.org/wiki/Glacier

Persistent body of ice that moves downhill under its own weight Glacier of the Geikie Plateau in Greenland The Taschachferner in the Ötztal Alps in Austria . The mountain to the left is the Wildspitze (3.768 m), second highest in Austria With 7,253 known glaciers, Pakistan contai…

https://www.federalregister.gov/documents/2021/01/08/2020-29006/endangered-and-threatened-…

Federal Register :: Endangered and Threatened Species; Designation of Critical Habitat for the Beringia Distinct Population Segment of the Bearded Seal Skip to Content Home Sections Money Environment World Science & Technology Business & Industry Health & Public Welfare Browse Ag…

https://www.federalregister.gov/documents/2014/12/09/2014-28808/endangered-and-threatened-…

Federal Register :: Endangered and Threatened Species; Designation of Critical Habitat for the Arctic Ringed Seal Skip to Content Home Sections Money Environment World Science & Technology Business & Industry Health & Public Welfare Browse Agencies Topics (CFR Indexing Terms) Dat…