Plate Tectonic Theory Is Based on

question 3

Multiple Choice

Plate tectonic theory is based on

• A) a thermal convection model in which cool material in the earth's mantle rises and spreads laterally beneath the crustal plates.
• B) the idea that the earth's crust is fragmented into rigid crusts that are sinking slowly beneath crustal plates.
• C) the idea that coacervate formation causes continents to drift apart slowly on their crustal plates.
• D) observations that the sea floor is slowly spreading away from oceanic ridges due to thermal convection in the mantle.
• E) all of these.

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