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  2. life, living matter and, as such, matter that shows certain attributes that include responsiveness, growth, metabolism, energy transformation, and reproduction. Although a noun, as with other defined entities, the word life might be better cast as a verb to reflect its essential status as a process.

  3. Life Definition & Meaning | Britannica Dictionary

    www.britannica.com/dictionary/life

    LIFE meaning: 1 : the ability to grow, change, etc., that separates plants and animals from things like water or rocks; 2 : the period of time when a person is alive

  4. Tree of life | Meaning, Symbol, Biology, Name, & Movie |...

    www.britannica.com/topic/tree-of-life-religion

    tree of life, a widespread archetype common to many religions, mythologies, and folktales. The tree of life is a common idea in cultures throughout the world. It represents, at times, the source of life, a force that connects all lives, or the cycle of life and death itself.

  5. Life - Origin, Evolution, Abiogenesis | Britannica

    www.britannica.com/science/life/The-origin-of-life

    Life - Origin, Evolution, Abiogenesis: Perhaps the most fundamental and at the same time the least understood biological problem is the origin of life. It is central to many scientific and philosophical problems and to any consideration of extraterrestrial life.

  6. Life - Evolution, Diversity, Biology | Britannica

    www.britannica.com/science/life/Life-on-Earth

    Life - Evolution, Diversity, Biology: The existence of diverse definitions of life, as detailed in the previous section, surely means that life is complex and difficult to briefly define. A scientific understanding of living systems has existed since the second half of the 19th century.

  7. Definition, Measures, Applications, & Facts | Britannica

    www.britannica.com/topic/quality-of-life

    quality of life, the degree to which an individual is healthy, comfortable, and able to participate in or enjoy life events. The term quality of life is inherently ambiguous , as it can refer both to the experience an individual has of his or her own life and to the living conditions in which individuals find themselves.

  8. Evolution and the history of life on Earth - Encyclopedia...

    www.britannica.com/science/life/Evolution-and-the-history-of-life-on-Earth

    Life - Evolution, History, Earth: The evidence is overwhelming that all life on Earth has evolved from common ancestors in an unbroken chain since its origin. Darwin’s principle of evolution is summarized by the following facts.

  9. Confucianism, the way of life propagated by Confucius in the 6th–5th century bce and followed by the Chinese people for more than two millennia. Although transformed over time, it is still the substance of learning, the source of values, and the social code of the Chinese.

  10. Human evolution, the process by which human beings developed on Earth from now-extinct primates. The only extant members of the human tribe, Hominini, belong to the species Homo sapiens. The exact nature of the evolutionary relationships between modern humans and their ancestors remains the subject of debate.

  11. It is necessary not only to probe the warrant for atheism but also carefully to consider what is the most adequate definition of atheism. This article will start with what have been some widely accepted, but still in various ways mistaken or misleading, definitions of atheism and move to more adequate formulations that better capture the full ...