TheChampion
27 FollowersLife is a characteristic that distinguishes physical entities that have biological processes, such as signaling and self-sustaining processes, from those that do not, either because such functions have ceased (they have died) or because they never had such functions and are classified as inanimate. Various forms of life exist, such as plants, animals, fungi, protists, archaea, and bacteria. Biology is the science that studies life. Life Temporal range: 3770–0 Ma Pha.ProterozoicArcheanHad'n Archean - Present (possible Hadean origin) Ruwenpflanzen.jpg Plants in the Rwenzori Mountains, Uganda Scientific classificatione Domains and Supergroups Life on Earth: Non-cellular life[note 1][note 2] Viruses[note 3] Virusoids Viroids Cellular life Domain Bacteria Domain Archaea Domain Eukarya Archaeplastida SAR Excavata Amoebozoa Opisthokonta There is currently no consensus regarding the definition of life. One popular definition is that organisms are open systems that maintain homeostasis, are composed of cells, have