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Zoeyismycat Zoeyismycat
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6 years ago

Why does Earth have plate tectonics?
  a. denser oceanic crust (relative to continental crust)
  b. thicker oceanic crust (relative to continental crust)
  c. relatively rapid cooling
  d. convection currents and released heat deep within the mantle
  e. active volcanoes (in the past and present)

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tim87101010tim87101010
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6 years ago
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6 years ago
Thanks
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This helped my grade so much Perfect
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This site is awesome
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