A vida é a característica que distingue os seres que possuem processos biológicos, como sinalização celular e autossuficiência, daqueles que não a possuem.

It is the characteristic that distinguishes beings that have biological processes, such as cell signaling and self-sufficiency, from those that do not have it, either because these processes have ceased (as in the case of death), or because they never had them, being classified as inanimate. There are diverse forms of life, including plants, animals, fungi, protists, archaea and bacteria.