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Jul 10, 2014, 10:01 am23 ptsGrist
Azolla, otherwise known as duckweed, is a tiny aquatic fern with a secret superpower: It can turn nitrogen from the air into plant food. Actually, azolla can’t do this on its own. It relies on symbiotic bacteria tenants who do the real work of ‘fixing’ the atmospheric nitrogen into a more plant-accessible…
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