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1. www.independent.co.uk › news › worldThe first living things: how chemicals began to replicate into

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   Feb 7, 2009 · The world's first mouth was nothing more than a toothless, microscopic hole, yet it triggered a powerful predator/prey relationship among living things.

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2. en.wikipedia.org › wiki › Timeline_of_theTimeline of the evolutionary history of life - Wikipedia

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   The first known mass extinction was the Great Oxidation Event 2.4 billion years ago, which killed most of the planet's obligate anaerobes. Researchers have identified five other major extinction events in Earth's history, with estimated losses below: [ 11 ]

3. theconversation.com › how-we-reconstructed-theHow we reconstructed the ancestor of all life on Earth

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   Aug 15, 2024 · To reconstruct Luca’s genome, we needed a sample of genomes (all the genetic information in an organism) from across different groups of bacteria and (single cell organisms distinct from...

4. www.physicsoftheuniverse.com › topics_lifeThe Beginnings of Life - Physics of the Universe

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   The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.

5. www.newscientist.com › article › dn17453-timelineTimeline of the evolution of life on Earth | New Scientist

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   Jul 14, 2009 · 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 organisms like ...

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6. www.sciencealert.com › scientists-reveal-how-theyScientists Reveal How They Identified The Ancestor of All ...

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   Aug 16, 2024 · Over 600 million years ago, the common ancestor of all animals emerged – the microscopic urmetazoan. Billions of years before all of that happened, however, the common ancestor of all living organisms, the last universal common ancestor (Luca), must have existed.

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   How did life start on Earth?

   • Now, our hopes to offer new insights into the origin of life on Earth. Around 375 million years ago, our fish-like ancestors breathed through gills. Over , the common ancestor of all animals emerged – . Billions of years before all of that happened, however, the common ancestor of all living organisms, the (Luca), must have existed.

   How we reconstructed the ancestor of all life on Earth

   theconversation.com/how-we-reconstructed-the-ancestor-of-all-life-on-earth-236452

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   What are some of the first living things on Earth?

   • But let’s start with what we know about some of the very first living things on Earth. Cyanobacteria, also known as blue-green algae, started out on Earth quite a while ago. Possible fossil examples have been found in rocks that are around 3500 million years old, in Western Australia.

   The origins of life on Earth - Curious - Australian Academy of Science

   www.science.org.au/curious/space-time/origins-life-earth

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   How do biologists reconstruct the history of life on Earth?

   • There are all sorts of ways to reconstruct the history of life on Earth. Pinning down when specific events occurred is often tricky, though. For this, biologists depend mainly on dating the rocks in which fossils are found, and by looking at the “molecular clocks” in the DNA of living organisms. There are problems with each of these methods.

   Timeline of the evolution of life on Earth - New Scientist

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

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   Did a heavy bombardment obliterate life 3.8 billion years ago?

   • The impacts reshape the planet surface and may help drive the onset of plate tectonics. However, the idea that there is an especially intense “ Late Heavy Bombardment ” between about 4 and 3.8 billion years ago, which obliterates any life, no longer seems to be true.

   Timeline of the evolution of life on Earth - New Scientist

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

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   How did humans survive the world's first mouth?

   • The world's first mouth was nothing more than a toothless, microscopic hole, yet it triggered a powerful predator/prey relationship among living things. Creatures now evolved rapidly in an arms race to protect themselves from being eaten or to equip themselves better for attack. Some found that the best survival strategy was to link up into teams.

   The first living things: how chemicals began to replicate

   www.independent.co.uk/news/world/world-history/the-first-living-things-how-chemicals-began-to-replicate-into-microscopic-forms-of-life-1548110.html

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   What was the first life based on?

   • There are multiple competing hypotheses for the nature of the first life, for instance that it was based on RNA rather than DNA. There are also many proposed settings, such as undersea alkaline vents and geothermal ponds on land. The question of life’s origin fuses a range of scientific disciplines from chemistry to ecology. 4.2 billion years ago?

   Timeline of the evolution of life on Earth - New Scientist

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

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8. www.science.org.au › curious › space-timeThe origins of life on Earth - Curious

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   But let’s start with what we know about some of the very first living things on Earth. Cyanobacteria, also known as blue-green algae, started out on Earth quite a while ago. Possible fossil examples have been found in rocks that are around 3500 million years old, in Western Australia.