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Stellar "sea", and Planetary "land"
"Sam Wormley" wrote:
DonH wrote: If this analogy with Biological Evolution has any validity, then - How many Elements are entirely "marine"? How many are only "terrestrial"? And how many are "amphibious"? In a very nice post "Sam Wormley" wrote: Let us consider our solar system. Via spectroscopy, we find all the naturally occurring elements through Uranium (perhaps not 43 Technetium, as it is the atomic number element without any stable isotopes). The H, He and Li mostly came from the first three minutes of the big band and the rest from exploding stars long before our solar system formed. We estimate that our solar system is 4.56 billion years old based on the oldest rocks--Carbonaceous chondrites. So everything was here from the "start" of our solar system. An important unanswered question: Did life find safe harbor of one or more of the solar system bodies (Earth, Mars, Titan, Europe, Enceladus, etc.)? Or does did life get started dependent time/places in the solar system. Life has evolved following Darwinian principles. If you want to talk about evolution of elements, the mechanisms for the creation of heavy elements via nuclear reactions is somewhat understood. If you will remember, most H, He and Li were created in the big band. Elements up through the iron group. [ like Fe, Co or Ni at which level no more energy is radiated ], are created via fusion processes [aka nucleo sythesis ]in the cores of stars. Heavier elements yet in supernovae. hanson wrote: Now Sam, to sustain life, also detail why every multicellular, oxygen-consuming organism/lifeform uses iron (Fe) in its Blood, barring a few sea creatures that use Cobalt. = Iron is an utterly fascinating element: =1= Fe catches & releases the oxygen in the blood's Haemin. =2= Iron, as a metal, is very durable und is used to house, transport and defend ourselves. =3= Iron is also an extremely volatile element when it combines with carbon monoxide into Iron penta carbonyle (Fe(CO)5. =4= Fe(CO)5 is formed in interstellar dust clouds where it sythesizes with H, O, C & N, most of the needed amino acids that are necessary for protein formation. =5= Fe(CO)5 is produced in industrial quantites here on earth and is a liquid that boils at 103°C, roughly the same temp as is water. =6= Fe(CO)5 is extremely toxic, while other Iron compounds are essential for life to exist. =7= Iron which was born in the final labors of a dying star gave you the gift of life and it rules over your existence with its... well... iron fist! Take care, you guys, Merry Xmas & laugh as long as you still can.... ahahahaha... ahahahahanson --- news://freenews.netfront.net/ - complaints: --- |
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