Define

(a) Biomass

(b) Anaerobic degradation.

(a) Biomass. It is the amount of living matter, measured as fresh or dry weight.

(b) Anaerobic Degradation. There is slowing down of rate of decomposition of organic remains which will pile up. Offensive odors may occur due to putrefaction of proteins while fermentation of carbohydrates gives rise to alcohols and organic acids that may kill the microbes. It is, however, useful in production of biogas.