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Documents Climate and Human Evolution; the last 4.6 billion years By Kristin Hepper.

Climate and Human Evolution; the last 4.6 billion years By Kristin Hepper Time gone by… Earth is 4.5 billion years old Archaean Era 3800 to 2500 million years ago Proterozoic…

Documents Plate Tectonics

Plate Tectonics Plate Tectonics Chapter 4 Section 1 Vocabulary Inside the Earth Crust Mantle Core Lithosphere Asthenosphere Mesosphere Tectonic Plate The composition of the…

Documents Questions...

Questions... What is the theory of plate tectonics? What is the lithosphere? What is the asthenosphere? What is the connection between the two? What are the two types of…