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All Answers (14) 1  Movement of plate tectonics causes a change in the ocean currents and in turn generates more heat. Shifting of these tectonic plates result in the creation of the volcanic eruptions increases the degree of carbon dioxide (CO2) and sulphur dioxide (SO2) in the atmosphere that also leads to a rise in the temperature levels.
Volcanic degassing of volatiles, including water vapour, occurred during the early stages of crustal formation and gave rise to the atmosphere. When the surface of Earth had cooled to below 100 Â°C (212 Â°F), the hot water vapour in the atmosphere would have condensed to form the early oceans.