Life
| Life (Biota) |
|---|
 Life on a rocky peak in the Waitakere Ranges |
| Scientific classification |
| Domains and Kingdoms |
Life on Earth:
|
Life is a process that distinguishes organisms from non-living objects, such as non-life, and dead organisms. Living organisms are capable of growth and reproduction, some can communicate and many can adapt to their environment through changes originating internally. A physical characteristic of life is that it feeds on negative entropy. In more detail, according to physicists such as John Bernal, Erwin Schrödinger, Eugene Wigner, and John Avery, life is a member of the class of phenomena which are open or continuous systems able to decrease their internal entropy at the expense of substances or free energy taken in from the environment and subsequently rejected in a degraded form (see: entropy and life).
An entity with the above properties is considered to be a living organism, hence, a 'life form'. However, not every definition of life considers all of these properties to be essential. For example, the capacity for evolution is sometimes taken as the only essential property of life; this definition notably includes viruses, which do not qualify under narrower definitions as they are acellular and do not metabolize.
A diverse array of living organisms can be found in the biosphere on Earth. Properties common to these organisms—plants, animals, fungi, protists, archaea and bacteria—are a carbon- and water-based cellular form with complex organization and heritable genetic information. They undergo metabolism, possess a capacity to grow, respond to stimuli, reproduce and, through natural selection, adapt to their environment in successive generations. So far, there is no evidence of extraterrestrial life.
topLife
Watch video clips from the NBC TV show Life, featuring Damian Lewis (as Charlie Crews), a cop returning to life after prison. View videos, episode recaps, photos & bios; Find cast ...
Life | Watch Episodes Online for Free - Life TV Show, Series - Video ...
LIFE.com represents the most amazing collection of professional photography on the Web. With over 10 million photos from the legendary archives of LIFE magazine and thousands more ...
LIFE.com - Your World in Pictures
Life is a state that distinguishes organisms from non-living objects, such as non-life, and dead organisms, being manifested by growth through metabolism and reproduction.
Life - Wikipedia, the free encyclopedia
Search millions of historic photos. Search millions of photographs from the LIFE photo archive, stretching from the 1750s to today. Most were never published and are now available ...
LIFE photo archive hosted by Google
Official website. Second Life is a free 3D virtual world where users can socialize, connect and create using voice and text chat.