There are three states in matter: solid, liquid and gas. The fourth state is called plasma. But it is generally not included. It is obtained by heating a gas until the atomic electrons are eliminated from the atomic nucleus. I hope you mean Bose Einstein!!!!! Bosons comprise one of two classes of particles while the other is generally a fermion. When you cool a dilute gas of bosons to absolute temperature that is zero the condensate obtained is called Bose Einstein condensate . Wind, heat, vapor pressure, surface area are some factors which influence evaporation. Mark as best!!!