Mortality (1) Feeding and feeds (1) Seedlings (1) Composition (1) Diseases (1) Death and burial (1) Death (1) Observations (1) Observations (1) Biomass (1) Protista (1) Value (1) Spleen (1) Sewage (1) Protozoa (1) Production (Economic theory) (1) Possibility (1) Nitrogen (1) Nitrification (1) Mud (1) Microorganisms (1) Mechanical movements (1) Impact (1) Flagellata (1) Eukaryotic cells (1) Dead bodies (Law) (1) Day (1) Autotrophic bacteria (1) Bacteria (1) Amoeba (1)