The three correct answers for ways in which heat energy leaves the surface of land masses are:
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Evaporation - This process involves the conversion of liquid water into vapor, which absorbs heat from the surface, thus removing heat energy.
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Radiation of infrared energy - Heat energy is emitted from the land surface in the form of infrared radiation, dissipating into the atmosphere.
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Conduction to air, which then rises in convection - The land surface conducts heat to the air above it, warming the air, which can then rise, taking heat energy away from the surface.
The other options, such as plant growth, animal activity, and glacial motion, do not specifically represent direct mechanisms by which heat energy leaves the surface of land masses.