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The definition of life has long been a challenge for scientists and philosophers. [2] [3] [4] This is partially because life is a process, not a substance. [5] [6] [7] This is complicated by a lack of knowledge of the characteristics of living entities, if any, that may have developed outside Earth.
The Seven Pillars of Life are the essential principles of life described by Daniel E. Koshland in 2002 in order to create a universal definition of life. [1] One stated goal of this universal definition is to aid in understanding and identifying artificial and extraterrestrial life . [ 2 ]
The first English use of the expression "meaning of life" appears in Thomas Carlyle's Sartor Resartus (1833–1834), book II chapter IX, "The Everlasting Yea". [1]Our Life is compassed round with Necessity; yet is the meaning of Life itself no other than Freedom, than Voluntary Force: thus have we a warfare; in the beginning, especially, a hard-fought battle.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
The human condition can be defined as the characteristics and key events of human life, including birth, learning, emotion, aspiration, reason, morality, conflict, and death. This is a very broad topic that has been and continues to be pondered and analyzed from many perspectives, including those of art , biology , literature , philosophy ...
The Happy Planet Index, introduced in 2006, is unique among quality of life measures in that, in addition to standard determinants of well-being, it uses each country's ecological footprint as an indicator. As a result, European and North American nations do not dominate this measure. The 2012 list is instead topped by Costa Rica, Vietnam and ...
Personality is any person's collection of interrelated behavioral, cognitive, and emotional patterns that comprise a person’s unique adjustment to life. [1] [2] These interrelated patterns are relatively stable, but can change over long time periods, [3] [4] driven by experiences and maturational processes, especially the adoption of social roles as worker or parent. [2]
The term "organism" (from the Ancient Greek ὀργανισμός, derived from órganon, meaning ' instrument, implement, tool ', ' organ of sense ', or ' apprehension ') [2] [3] first appeared in the English language in the 1660s with the now-obsolete meaning of an organic structure or organization. [3]