Is Brownian motion due to the random fluctuation of the energy content of the environment, which means due to thermal noise?

d eras and periods

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

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