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Earth Sciences

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  • Bibliography – list of resources used for this section
  • Lithosphere – tectonic plates, features of the ocean floor, ridges, trenches
  • Ocean Sediments – classification by source, beaches, features of depositional coasts
  • Ocean Water – major ocean surface currents, factors that affect currents, tides, constituents of seawater salinity
  • Soil Classifications – by texture, English-Welsh system of soil classification, Russian system of soil classification
  • Soil Glossary – lists based on Soil Taxonomy and FAO/UNESCO Soil Map of the World
  • Time Divisions of Earth’s History – periods and epochs of the Paleozoic, Mesozoic, and Cenozoic eras