When were the O2 molecules present in the atmosphere last bonded? average age and median age? How and when were they liberated from carbon atoms ? Was it mainly via photosynthesis or by another process?
thanks in advance if you know the answers.
2006-12-01 19:37:01 · 3 answers · asked by boucher5353 1 in Science & Mathematics ➔ Earth Sciences & Geology
Most of the oxygen was created on Earth soon after its formation, 4.57 billion years ago. Oceans were created by volcanic activity, a process that already generated O2. Algaes continued to produce more, until all ocean oxydation was complete, when the O2 started rising abose the ground.
So the O2 you breathe is about 4 to 4.3 billion years old.
(But, since all quarks that make you were created at the big bang, YOU, as well as all the Oxygen, are about 16.5 billion years old...)
2006-12-01 20:00:22 · answer #1 · answered by just "JR" 7 · 0⤊ 0⤋
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2016-12-29 19:15:27 · answer #2 · answered by ? 3 · 0⤊ 0⤋
as old as time has been
2006-12-03 15:23:05 · answer #3 · answered by quikonfet 2 · 0⤊ 0⤋