this post was submitted on 23 Jan 2025
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The air is full of nitrogen with trace amounts of carbon. The soil is rich in carbon but nitrogen poor. Plants draw carbon from the air and nitrogen from the soil.
Is there a reason for this? Like, just a fluke of evolution, or is it just not as bioavailable from the opposite source?
Plants managed to use their ability to pull carbon out of the air to kill almost everything else alive at the time
They pull out carbon from carbon dioxide, and dump the oxygen*
Which turned out ok. It's called the great oxygenation crisis
*That which they don't use, I don't know if they used it back then