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Primordial Soup

ChristineM

"Be strong", I whispered to my coffee.
Premium Member
I still find it odd that the evolution of single celled oranganisms to terrestrial plants took 4 billion when the evolution of dna took a mere billion

You are welcome to your oddity. There has been much information on this thread, if it doesn't get you to even think about evolution then there is no point.
 

ChristineM

"Be strong", I whispered to my coffee.
Premium Member
Top scientists only have hypothesis with no evidence to test them so basically they got speculation at this point. That’s all I got

Evolution is not a hypothesis, it is both a fact and theory. It is observed in the laboratory, and out in the wild.
 

Jimmy

King Phenomenon
You are welcome to your oddity. There has been much information on this thread, if it doesn't get you to even think about evolution then there is no point.
Oh it’s got me thinking but the fact that I find it odd still remains
 

Subduction Zone

Veteran Member
I still find it odd that the evolution of single celled oranganisms to terrestrial plants took 4 billion when the evolution of dna took a mere billion
Land plants rely on oxygen. They both make energy and burn it. That is a bit different from how cyanobacteria work, they do not have energy storage means. Very simple algae etc. may have lived on perpetually wet surfaces and from them lichen arose for dryer surfaces, but those are not technically "plants". Plants had to wait until there was a significant amount of oxygen in the air.



I was thinking and you may have conflated the first cyanobacteria with the Great Oxidation Event. That began about 2.5 billion years ago. But it took a billion years for the bacteria to rise in numbers high enough so that they could even overcome the most reducing compounds in the ocean. The onset of the GOE is marked by the onset of the oxidation of iron ions. Without molecular oxygen when iron ionizes it forms Fe+2. With molecular oxygen available it oxidizes to Fe+3. Fe+2 is soluble in water. Fe+3 not so much. What we see from then on was the formation of "red beds" or sedimentary deposits with iron oxide in them. The iron ore for almost all of the world's iron mines was deposited as over the next billion years the dissolved Fe+2 all oxidized to Fe+3. After that was gone then the excess began to enter the atmosphere.

 

Evangelicalhumanist

"Truth" isn't a thing...
Premium Member
No one has seen abiogenesis either, so it's figure on either side I guess by some.
But you have seen life -- so you know it exists. Now, the problem is, it exists in such a way that life mostly feeds on other life. Does it seem to you that an intelligent and (hopefully) good God would create life that can exist only by the death of other life? Usually violently, often incredibly cruelly (like wasps keeping caterpillars alive so their larvae can eat it alive from the inside and still have it all nice and fresh). So @ChristineM is quite right, you only have 2 other choices -- well, 3 actually -- life was brought here from somewhere else (but then you must ask "how did that life begin?"), or life always existed (we know that's not true), or life arose from the elements and chemical reactions available on earth at a time very different from now. (Abiogenesis came about in conditions that don't exist today -- and then changed the conditions in which it lived through its own living processes.)
 

ChristineM

"Be strong", I whispered to my coffee.
Premium Member
But you have seen life -- so you know it exists. Now, the problem is, it exists in such a way that life mostly feeds on other life. Does it seem to you that an intelligent and (hopefully) good God would create life that can exist only by the death of other life? Usually violently, often incredibly cruelly (like wasps keeping caterpillars alive so their larvae can eat it alive from the inside and still have it all nice and fresh). So @ChristineM is quite right, you only have 2 other choices -- well, 3 actually -- life was brought here from somewhere else (but then you must ask "how did that life begin?"), or life always existed (we know that's not true), or life arose from the elements and chemical reactions available on earth at a time very different from now. (Abiogenesis came about in conditions that don't exist today -- and then changed the conditions in which it lived through its own living processes.)

::WINNER::
 

Jimmy

King Phenomenon
Land plants rely on oxygen. They both make energy and burn it. That is a bit different from how cyanobacteria work, they do not have energy storage means. Very simple algae etc. may have lived on perpetually wet surfaces and from them lichen arose for dryer surfaces, but those are not technically "plants". Plants had to wait until there was a significant amount of oxygen in the air.



I was thinking and you may have conflated the first cyanobacteria with the Great Oxidation Event. That began about 2.5 billion years ago. But it took a billion years for the bacteria to rise in numbers high enough so that they could even overcome the most reducing compounds in the ocean. The onset of the GOE is marked by the onset of the oxidation of iron ions. Without molecular oxygen when iron ionizes it forms Fe+2. With molecular oxygen available it oxidizes to Fe+3. Fe+2 is soluble in water. Fe+3 not so much. What we see from then on was the formation of "red beds" or sedimentary deposits with iron oxide in them. The iron ore for almost all of the world's iron mines was deposited as over the next billion years the dissolved Fe+2 all oxidized to Fe+3. After that was gone then the excess began to enter the atmosphere.

Right Cyanobacteria came before terrestrial plants. Still took 4 billion from single celled to terrestrial though
 

ChristineM

"Be strong", I whispered to my coffee.
Premium Member
Every organisms dna is different. That qualifies as complex

I repeat, dna is made of just 4 nucleotides. Those nucleotides base pairs can give a maximum of only 256 combination


It only gets complicated at the chromosome level, a human has just 23 chromosomes which give over 8 million possible combinations of the nucleotides
 

ChristineM

"Be strong", I whispered to my coffee.
Premium Member
Sure a lot. I was referring to origins. You just misinterpreted. No biggy

Not sure about misinterpretation, you yourself have been discussing evolution throughout this thread. Moving goalposts won't make that go away
 
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