The average moist adiabatic rate is 6 C°/1000 m (3.3 F°/1000 ft), but values actually vary as a function of both temperature and moisture content.

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The statement is true. The moist adiabatic rate is not a constant value, but rather varies depending on the temperature and moisture content of the air. The average value is approximately 6 C°/1000 m (3.3 F°/1000 ft), but it can range from 4 to 9 C°/1000 m (2.2 to 5 F°/1000 ft) depending on the specific conditions.

The Average Moist Adiabatic Rate Is 6 C°/1000 M (3