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Title: EARTH'S ENERGY BALANCE
Caption: Most of the annual energy flow to the Earth from the Sun is either reflected or reradiated back into outer space. Only a small component of Earth's heat is actually coming from its interior. (After Pruitt, N. L., Underwood, L. S., and Surver, W. 1999. Bioinquiry, Learning system 1.0, making connections in biology. John Wiley & Sons)
Keywords: heat budgets, atmosphere, solar radiation, insolation, sunlight, electromagnetic radiation, longwave radiation, emission, reflection, scattering