The human skull is used universally as a symbol of<unk> <unk> , personified as a human skeleton dressed in a shroud and clutching a scythe, from the Cathedral of Trier in Trier, Germany<unk>  tending to his flowers, in Kuoleman Puutarha, Hugo Simberg (1906)<unk>  is the irreversible cessation of all biological functions that sustain an organism. Brain<unk>  is sometimes used as a legal definition of<unk> . The remains of a former organism normally begin to decompose shortly after<unk> .<unk>  is an inevitable, universal process that eventually occurs in all organisms.<unk>  is generally applied to whole organisms; the similar process seen in individual components of an organism, such as cells or tissues, is necrosis. Something that is not considered an organism, such as a virus, can be physically destroyed but is not said to die. As of the early 21st century, over 150,000 humans die each day, with ageing being by far the most common cause of<unk> . Many cultures and religions have the idea of an afterlife, and also may hold the idea of judgement of good and bad deeds in one's life (heaven, hell, karma).
Death
Brain death
Euthanasia
Poison
Clinical death
Sudden death 
Dying
Asphyxia