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The first life on Earth was most likely simple, single-celled organisms that shared characteristics with organisms currently in the domain Archaea.

Timeline of the evolutionary history of life - Wikipedia, the free ...

en.wikipedia.org/wiki/Timeline_of_the_evolutionary_history_of_life

This article is about the evolution of all life on Earth. For more .... Bacteria develop primitive forms of photosynthesis which at first did not produce oxygen.

Archean : The First Life on Earth - Department of Paleobiology

paleobiology.si.edu/geotime/main/htmlversion/archean3.html

The First Life on Earth Earth was able to support life only after the planet had cooled enough for a rocky crust to solidify. Once that happened, water vapor from  ...

Scientists may have found the earliest evidence of life on Earth ...

www.sciencemag.org/news/2015/10/scientists-may-have-found-earliest-evidence-life-earth

Oct 19, 2015 ... Now, a controversial new study presents potential evidence that life ... These crystals provide a rare glimpse into the first chapter of Earth's ...

Greatest Mysteries: How Did Life Arise on Earth? - LiveScience

www.livescience.com/1804-greatest-mysteries-life-arise-earth.html

But despite knowing approximately when life first appeared on Earth, scientists are ... Today, there are several competing theories for how life arose on Earth.

BBC Nature - History of life on Earth

www.bbc.co.uk/nature/history_of_the_earth

The history of life on Earth began about 3.8 billion years ago, initially with single- celled prokaryotic cells, such ... 570 million years ago, First arthropods evolve.

The Beginnings of Life - The Physics of the Universe

www.physicsoftheuniverse.com/topics_life.html

The study of the origin of life on Earth or, more specifically, how life on Earth ... is the study of how living things have changed over time since life first arose).

Exploring Life's Origins: A Timeline of Life's Evolution

exploringorigins.org/timeline.html

This suggests that life must have evolved sometime during Earth's tumultuous first billion years. How did life evolve? And what did early forms of life look like?

Actionbioscience | Were Bacteria the First Forms of Life on Earth?

www.actionbioscience.org/evolution/jeffares_poole.html

Scientists used to think that life evolved from the simple bacteria. ... Nevertheless, most scientists hold that the first organisms on Earth were much like bacteria of ...

Timeline: The evolution of life | New Scientist

www.newscientist.com/article/dn17453-timeline-the-evolution-of-life/

Jul 14, 2009 ... There are all sorts of ways to reconstruct the history of life on Earth. ... First undisputed fossil evidence of cyanobacteria, and of photosynthesis: ...

Popular Q&A
Q: When was the first life on Earth?
A: The answer to this question can depend on your religion, if you are catholic, the answer to this question is grass, however, if you are another religion, then I... Read More »
Source: wiki.answers.com
Q: What was first life on earth.
A: Life is defined by the ability to metabolise, grow and most importantly to procreate or multiply. Supposedly, the first life on earth came in the form of coacer... Read More »
Source: www.answers.com
Q: What was the first life on earth.
A: Chemoautotrophs were the first life on this earth. Chemoautotrophs were small living organisms that were considered to be simple cells. Read More »
Source: www.answers.com
Q: What was the first life on earth.
A: The first origins of life were likely small, simple unicellular organisms and not Read More »
Source: www.chacha.com
Q: What was the first life on earth?
A: If it started here on Earth, it came about due to natural processes, and I suspect at a geo-thermal vent underneath the ocean, 4 billion years ago. But I think ... Read More »
Source: answers.yahoo.com