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See all on WikipediaLife - Wikipedia
Life is a quality that distinguishes matter that has biological processes, such as signaling and self-sustaining processes, from matter that does not. It is defined descriptively by the capacity for homeostasis, organisation, metabolism, growth, adaptation, response to stimuli, and reproduction. All life over … See more
Challenge
The definition of life has long been a challenge for scientists and philosophers. This is partially because life is a process, not a substance. This is complicated by a lack of knowledge … See moreThe diversity of life on Earth is a result of the dynamic interplay between genetic opportunity, metabolic capability, environmental challenges, … See more
Chemical elements
All life forms require certain core chemical elements for their biochemical functioning. These include carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur—the elemental macronutrients for all organisms. Together … See moreMaterialism
Some of the earliest theories of life were materialist, holding that all that exists is matter, and that life is merely a complex form or arrangement … See moreOrigin of life
The age of Earth is about 4.54 billion years. Life on Earth has existed for at least 3.5 billion years, with the oldest physical traces of life dating back 3.7 billion years. Estimates from molecular clocks, as … See moreAntiquity
The first classification of organisms was made by the Greek philosopher Aristotle (384–322 BC), who grouped living things as either plants or animals, based mainly on their ability to move. He distinguished animals with blood … See moreThough life is confirmed only on Earth, many think that extraterrestrial life is not only plausible, but probable or inevitable, possibly resulting in a See more
Wikipedia text under CC-BY-SA license Life Definition & Meaning - Merriam-Webster
The meaning of LIFE is the quality that distinguishes a vital and functional being from a dead body. How to use life in a sentence.
Life | Definition, Origin, Evolution, Diversity, & Facts | Britannica
- life, living matter and, as such, matter that shows certain attributes that include responsiveness…
The phenomenon of life can be approached in several ways: life as it is known and studied on planet Earth; life imaginable in principle; and life, by hypothesis, that might exist elsewhere in the universe (see extraterrestrial life). As far as is known, life exists only on Earth. Most life-forms re…
- life, living matter and, as such, matter that shows certain attributes that include responsiveness…
Interesting reads - Life
Powered by MSNLife: Defining Life - Science for the Public
Jan 25, 2025 · Life is chemistry, and it started somehow by shifting from inanimate to animate molecules. Enough ambiguity in this respect exists that defining life is still difficult. The major …
Life Definition and Examples - Biology Online Dictionary
Jun 16, 2022 · Life is a characteristic of a living organism that distinguishes the latter from a dead organism or a non-living thing, as specifically distinguished by the capacity to grow, metabolize, respond (to stimuli), adapt, and reproduce.
Life - Evolution, Diversity, Biology | Britannica
Jan 12, 2025 · 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 …
LIFE | English meaning - Cambridge Dictionary
LIFE definition: 1. the period between birth and death, or the experience or state of being alive: 2. for the whole…. Learn more.
Life - Simple English Wikipedia, the free encyclopedia
Life is a concept in biology. It is about what separates a living thing from dead matter. Most life on Earth is powered by solar energy: the only known exceptions are the chemo-synthetic bacteria …
Definition of Life – Introductory Biology: Evolutionary …
Identify the core characteristics that define “life.” Identify the commonalities and differences among various definitions of “life.” Discuss the challenges of settling on a single definition of life. Biology is the science that studies life. What …
What is life? - PMC
Keywords: Life definition, Living viruses, Robots, Extraterrestrial life. Introduction. Life is a wonderful natural process that occurs in highly organized dynamic structures that we call living …
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