Answer:
Due to the release of the latent heat.
Step-by-step explanation:
An adiabatic process refers to the process when a parcel of air cools and expands, or warms and compresses, with no exchange of heat with its surroundings. The wet adiabatic rate of cooling is generally less in comparison to the dry rate as when the parcel of moist air expands, the droplets of water in it will evaporate, carrying the heat with them. This assists in disturbing the heat produced from the parcel expanding. The same phenomenon is applicable to compressing the parcel and condensation.