A different profitable strategy for COD removing may be the addition of germs or other microbes that degrade natural and organic parts in wastewater.C O D = 8000 ( b ? s ) n T h e   t i c h   m a u   t h u displaystyle COD= frac 8000(b-s)n The tich mau thu Only proctored tests will likely be acknowledged, and scores have to be a lot less than 18