The tendency of the body to seek and maintain a condition of balance or equilibrium within its internal environment.
The ecological state of a species being unique to a defined geographic location.
Cognitive disorder in which the inability to recognize the faces of familiar people is impaired.
Production of signals characterized by conspicuous colours and contrasting patterns as warning displays to deter predation.
The death of cells that occurs as a normal and controlled part of an organism's growth or development.
The locomotory movement that occurs when a whole organism moves towards or away from a stimulus of light.