Death and his flowers, in Kuoleman puutarha, Hugo Simberg (1906)

The human skull is often used as a symbol for death

Death is the end of a life in an organism. All biological and living activity of the living thing stops, including the mind and the senses. The usual signal for death in humans and many other animals is that the heart stops beating and cannot be restarted. This can be caused by many things. All living things have a limited lifespan, and all living things eventually die.