Then it is converted back to atmospheric nitrogen by denitrifying bacteria that live in anaerobic (oxygen-free) mud, or it is returned to the soil as a mineral nutrient by decomposers (Fig.1).
(it; is converted; back to atmospheric nitrogen; T:Then) (bacteria; live; L:in anaerobic (oxygen-free) mud) (it; is returned; to the soil as a mineral nutrient by decomposers)
it bacteria it
is converted live is returned
back to atmospheric nitrogen T:Then
L:in anaerobic (oxygen-free) mud
to the soil as a mineral nutrient by decomposers