connorkerns connorkerns

02-05-2017
Physics

contestada

Which of the following can fix nitrogen?

A:human industrial processes

B:lightning

C:certain bacterial species

D:all of the above

Respuesta :

hinditwerk12 hinditwerk12

03-05-2017

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

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