2-) Calculate the resulting CO2 concentration in the atmosphere 30 years from now assuming that we will use only coal to generate electricity. Assume efficiencies of 40 % for power plants. The current CO2 level in the atmosphere is 37O ppm by volume. Assume that all of the atmosphere's mass is within 11 km of the planetary surface. Is this a reasonable value? If it is not, state some reasons. State all your assumptions.
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