2006-11-08 17:18:18 · 4 answers · asked by Chase 4 in Science & Mathematics ➔ Biology
I don't know much but it is known from geology that the early atmosphere had no oxygen. eg. banded iron formations (one of our main sources or iron) were very widespread before 2.5 billion years ago, indicating that iron existed mainly in the reduced state. Red-beds, containing oxidised iron, only appear later. It is also known that there was a lot of volcanism, hence a lot of steam, carbon dioxide, ammonia and methane in the atmosphere. And recent models calculate that there would have been a lot of hydrogen too. The lack of oxygen makes the formation of organic compounds from all this easy.
2006-11-08 23:04:20 · answer #1 · answered by Anonymous · 1⤊ 0⤋
There was actual an experiment (a number of them) where they replicated early earth, combined basic inorganic elements, such as N, C, O, H etc, subjected this glass dome to bursts of electricity (to replicate lightening), heat lamps to replicate radiation and observed the outcomes. From inorganic elements, organic chains formed; the beginnings of life!
2006-11-09 02:36:49 · answer #2 · answered by mudgettiger 3 · 0⤊ 0⤋
I believe the composition of the ECF (extracellular fluid) is the same as that of the primordial soup, imagine!!!!!!!!
2006-11-09 12:08:35 · answer #3 · answered by virgodoll 4 · 0⤊ 0⤋
Well, we're here, aren't we?
2006-11-09 01:23:44 · answer #4 · answered by Angela M 6 · 1⤊ 0⤋