B3I1O1C3O1N1V4E1R1S1I1O1N1
20 points
BIOCONVERSION is validvalid
the conversion of organic materials (as wastes) into an energy source (as methane) by processes (as fermentation) involving living organisms
the conversion of organic materials (as wastes) into an energy source (as methane) by processes (as fermentation) involving living organisms