In animal sciences, the removal of protozoa from the rumen of ruminants is also called defaunation.
en.wikipedia.org These overflows release harmful substances into the surrounding land and water such as: antibiotics, estrogens, bacteria, pesticides, heavy metals, and protozoa.
en.wikipedia.org Protozoa are capable of reproductive rates equal to or exceeding that of their phytoplankton prey, therefore preventing any significant increase in phytoplankton populations, including blooms.
en.wikipedia.org The three main types of organisms causing these conditions are protozoa (causing protozoan infection), helminths (helminthiasis), and ectoparasites.
en.wikipedia.org Soil microorganisms can be classified as bacteria, actinomycetes, fungi, algae, and protozoa.
en.wikipedia.org