You might consider yourself lucky, not having been born from around 3.5 billion to roughly 2.2 billion years ago....
And if that is not the case then maybe you should, because in that particular time-span -which actually envelops three-quarters of the history of our planet- the earth was ruled by nothing but microbial life. Which is a fancy way of saying that our world then, with its unfavourable environmental conditions (very acid or basic environments, not a lot of oxygen, ...) and its vast amount of tiny organisms, was once a slime-world.
We know this because geologists -witty people who often study rocks- found evidence of this early and simple life in several rock formations located at outcrops of ancient rock material and because they studied the genesis of these rocks that hold a link to the distant history of this earth.
An indicator of this early life that is well-known to these scientists lies in certain laminated rocks called 'stromatolites' that are formed due to the trapping and cementing of sediment by bacterial mats and of which the eldest date from 3.5 billion years BP (before present). Therefore stromatolites are the only fossils recording such an early (and also vast) part of the history of life on an earth covered by microbial mats because, well, the conditions were right and also because there weren't any multicellular organisms to graze them yet.
(Samuël Delefortrie)
You might consider yourself lucky, not having been born from around 3.5 billion to roughly 2.2 billion years ago....
BeantwoordenVerwijderen[captivating start]
And if that is not the case then maybe you should, because in that particular time-span -which actually envelops [covers] three-quarters of the history of our planet- the earth was ruled by nothing but microbial life. Which is a fancy way of saying that our world then, with its unfavourable environmental conditions (very acid or basic [base] environments, not a lot of oxygen, ...) and its vast amount of tiny organisms, was once a slime-world.
We know this because geologists -witty people who often study rocks- found evidence of this early and simple life in several rock formations located at outcrops of ancient rock material and because they studied the genesis of these rocks that hold a link to the distant history of this earth.
An indicator of this early life that is well-known to these scientists lies in certain laminated rocks called 'stromatolites' that are formed due to the trapping and cementing of sediment by bacterial mats and of which the eldest date from 3.5 billion years BP (before present). Therefore stromatolites are the only fossils recording such an early (and also vast) part of the history of life on an earth covered by microbial mats because, well, the conditions were right and also because there weren't any multicellular organisms to graze them yet.
Good flow, clear account: English: ok.
well done,
olaf