Answers edited by Geoearth

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• What force holds the atmosphere in place as Earth travels through space?
  
• What is the length of a day?
  
• Question #5ded8
  
• Assume that the overall size of the earth's crust stays the same. If one plate is pushing away from the plate next to it on one side, what must be happening at the boundary with another plate on the opposite side?
  
• Who came up with the theory of plate tectonics?
  
• Which gases were so light they escaped the gravitational pull of early Earth?
  
• What is the size of earth's crust?
  
• What happens at a continent-oceanic convergent boundary?
  
• How are granite and rhyolite the same, and how do they differ?
  
• What causes different climates in different parts of the world?