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Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3

Temperature is defined as a. the equivalent of heat. b. a measure of the average kinetic energy of the individual atoms or molecules composing a substance. c. how hot or cold it is. d. the total kinetic energy of the atoms or molecules composing a substance. e. none of the above is correct.