Life is the condition that distinguishes living organisms from inorganic matter, characterized by growth, reproduction, and response to stimuli. It encompasses a wide variety of forms, from single-celled organisms to complex multicellular beings like humans. Life is sustained by processes such as metabolism and homeostasis, allowing organisms to adapt to their environments. Death is the cessation of all biological functions that sustain an organism. It marks the end of life and can occur due to various factors, including disease, injury, or aging. The concept of death raises philosophical and ethical questions about existence, the afterlife, and the impact of mortality on human behavior and society.