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Unformatted text preview: trogen Cycle: Example of an atmosphere- derived nutrient Biosphere pool Soil pool Atmospheric pool Nitrogen- fixing bacteria live in root nodules in the roots of some types of plants, such as beans h0p:// Legumes such as beans are rich in protein, in part because they have abundant access to organic nitrogen through their mutualis?c rela?onship with nitrifying bacteria in their root nodules h0p://...
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