Death is the end of life. It is the end of an organism or one of its parts. When an organism dies, it ceases to function as a living thing. Death may be caused by many things, including disease, aging, violence, and natural disasters.
Most organisms die because they are unable to obtain enough food or water, or they are unable to resist predators or diseases. Some die because they are too old and their bodies can no longer function properly. Others die because of injuries sustained in accidents or from violence. Still others perish in natural disasters such as floods, earthquakes, and wildfires.
Humans have long been fascinated by death and have tried to understand its causes and effects. In different cultures around the world, death is seen as a natural part of life or as something to be feared. Death is also a central theme in many religions.