History of life - Wikipedia
网页The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day.
Life - Evolution, History, Earth | Britannica
网页2024年9月3日 — 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.
The origin of life on Earth, explained | University of ...
网页2022年9月19日 — The origin of life on Earth stands as one of the great mysteries of science. Various answers have been proposed, all of which remain unverified. To find out if we are alone in the galaxy, we will need to better understand what geochemical conditions nurtured the first life forms.
Timeline of the evolutionary history of life - Wikipedia
网页The timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth. Dates in this article are consensus estimates based on scientific evidence, mainly fossils.
Life - Origin, Evolution, Abiogenesis | Britannica
网页2024年9月3日 — The origin of life is a result of a supernatural event—that is, one irretrievably beyond the descriptive powers of physics, chemistry, and other science. Life, particularly simple forms, spontaneously and readily arises from nonliving matter in short periods of time, today as in the past.
Life | Definition, Origin, Evolution, Diversity, & Facts
网页2024年9月3日 — 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 …
Timeline of the evolution of life on Earth - New Scientist
网页2009年7月14日 — Life Timeline: The evolution of life. The story of evolution spans over 3 billion years and shows how microscopic single-celled organisms transformed Earth and gave rise to complex...
跳至内容