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• Select Glaciers

  1

  Glaciers

  Authors:Sally Cole-misch and K. Lee LernerFrom:The Gale Encyclopedia of Science (Vol. 3. 6^th ed.)

  20212,094 words Topic overview 1350LGlaciers are flowing masses of ice created by years of snowfall and locally cold temperatures. Approximately one-tenth of Earth is covered by glaciers, which are most numerous near the poles. Glaciers cover most of...
• Select Fossil and Fossilization

  2

  Fossil and Fossilization

  Author:Marjorie PannellFrom:The Gale Encyclopedia of Science (Vol. 3. 6^th ed.)

  20213,360 words Topic overview 1290LFossils are a window into Earth's history and the evolution of life. The term fossil literally means something that has been “dug up, ”but its modern meaning is restricted to preserved evidence of past life. Such...