Which of the following can fix nitrogen? A:human industrial processes B:lightning C:certain bacterial species D:all of the above

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asked May 20, 2018 127k views

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Gwildu · Answer 1 · 2018-05-25T10:13:05+0000

Two kinds of nitrogen fixers are recognized: free-living (non-symbiotic) bacteria, including the cyanobacteria (or blue-green algae) Anabaena and Nostoc and such genera as Azotobacter, Beijerinckia, and Clostridium; and mutualistic (symbiotic) bacteria such as Rhizobium, associated with leguminous plants, and Spirillum

Which of the following can fix nitrogen? A:human industrial processes B:lightning C:certain bacterial species D:all of the above

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