What is Life?

Homeostasis = Maintenance of stable internal conditions Metabolism = Chemical processes that provide energy and nutrients for growth Adaptation = Ability to change in response to the environment Reproduction = Production of offspring

Empedocles's materialism = Life composed of four eternal elements Aristotle's hylomorphism = Living things have souls and embody both form and matter Universal common ancestor = Resulting from life originating at least 3.5 billion years ago Modern classification = Began with Carl Linnaeus's system of binomial nomenclature in the 1740s

Air, water, and soil = Where life exists all over the Earth Harsh environments = Occupied only by extremophiles Biosphere = Many ecosystems forming the biosphere Fossils = Traces left by many extinct species

<p>Biochemical molecules = Formed mainly from a few core chemical elements Living systems = Composed of biochemical molecules Extremophiles = Occupying harsh environments Viruses = Replicating only in host cells</p> Signup and view all the answers

<p>Aristotle = Proposed theories about living systems and classification of living things Carl Linnaeus = Introduced modern classification system with binomial nomenclature Empedocles = Proposed materialism theory about life composition Ancient scholars = Studied and theorized about life since ancient times</p> Signup and view all the answers