Death

Death is the end of the life of an organism. Death may refer to the end of life as either an event or condition (also known as passing away). Many factors can cause or contribute to an organism's death, including predation, disease, habitat destruction, senescence, malnutrition and accident or physical injury. The principal causes of human death in developed countries are diseases related to aging. The knowledge of death is central to human culture and many religions. In medicine, biological details and definitions of death have become increasingly complicated as technology advances. In animals, small movements of the limbs (for example twitching legs or wings) known as a postmortem spasm can sometimes be observed following death. Pallor mortis is a postmortem paleness which accompanies death due to a lack of capillary circulation throughout the body . Algor mortis describes the predictable decline in body temperature until ambient temperature is reached. Within a few hours of death... full article at wikipedia