Explanation:

DRY ADIABATIC LAPSE RATE.—If  a  parcel of  air  is  lifted,  its  pressure  is  DECREASED,  since pressure decreases with height, and its temperature falls due to the expansion. If the air is dry and the process is adiabatic,   the   rate   of   temperature   fall   is   1°C   per100 meters of lift (10°C per Km). If  that  parcel  descends  again  to higher pressure, its temperature then INCREASES at the rateof 1°C per 100 meters. This is known as the dry adiabatic lapse rate.