The songs of birds are part of a ritual to attract potential partners of their own species. The song presents specific patterns recognized only by members of the same species. What advantage does this present for the species of birds?

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .