Question

what is the effect of evaporation on its surroundings

Answer 1

If there will be evaporation the it's surrounding become cool because evaporation causes cooling.

Answer 2

evaporation causes cooling but at the same time transfer of energy take place.the surface of the substance at which evaporation is happening get cooled.if we talk in terms of heat energy then the transfer of energy take place from system to surrounding.
This increase in energy of surrounding increase the humidity content in air and also heat content