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Old March 25th 07, 12:02 AM posted to sci.astro.amateur
Sjouke Burry
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Posts: 338
Default Where atmospheric Nitrogen comes from?

Protagonist wrote:
Most our Oxygen 21% comes from photosynthesis, plant life!
Our atmosphere is 80% nitrogen, where does it come from?
Thx!
JS

From a number of supernova explosions.