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[[Image:Twyllie_dna2.jpg|right|thumb|"DNA by [T.R. Wyllie www.timothywyllie.com]"]]

[[Image:Twyllie_dna2.jpg|right|thumb|"DNA by T.R. Wyllie [www.timothywyllie.com]"]]

'''Biology''' (from Greek: βίος, ''bio'', "[[life]]"; and λόγος, ''[[logos]]'', "speech" lit. "to talk about life"), also referred to as the '''biological sciences''', is the [[scientific study]] of [[life]]. Biology examines the structure, function, growth, origin, evolution, and distribution of living things. It classifies and describes organisms, their functions, how species come into existence, and the interactions they have with each other and with the [[natural environment]].  Four unifying principles form the foundation of modern biology:  [[cell theory]], [[evolution]], [[genetics]] and [[homeostasis]].

'''Biology''' (from Greek: βίος, ''bio'', "[[life]]"; and λόγος, ''[[logos]]'', "speech" lit. "to talk about life"), also referred to as the '''biological sciences''', is the [[scientific study]] of [[life]]. Biology examines the structure, function, growth, origin, evolution, and distribution of living things. It classifies and describes organisms, their functions, how species come into existence, and the interactions they have with each other and with the [[natural environment]].  Four unifying principles form the foundation of modern biology:  [[cell theory]], [[evolution]], [[genetics]] and [[homeostasis]].