Evaporative cooling refers to that the liquid absorbs heat in the process of evaporating into gas, so as to reduce the surrounding temperature and play a cooling effect. Evaporative cooling effect refers to that in the social group composed of people with the same purpose or interest, the value of the group is similar to the overall temperature of the liquid. When the members with higher value leave the community, the average value of the community itself will decrease.
According to the above definition, which of the followings is the evaporative cooling effect?
Some teachers of an educational institution left the institution to start their own education company, making the institution's market competition more severe.