The net effect of “evaporative cooling” is a result of _______. no total change in the heat content of the treated air due to an increase in DB temperature, and a decrease in RH a decrease in the heat content of the treated air due to an increase in DB temperature, but a decrease in RH no total change in the heat content of the treated air due to a decrease in DB temperature, and an increase in RH a decrease in the heat content of the treated air due to a decrease in DB temperature, and an increase in RH