Catastrophic event Catastrophic event refers to any natural or man-made incident, including terrorism, which results in extraordinary levels of mass casualties, damage, or disruption ...
Trophic stage Trophic stage is the vegetative stage of free-living protozoan.
Eutrophication Eutrophication is an aging process in lakes, during which the water becomes overly rich in dissolved nutrients; this results in the excessive development of algae and other microscopic plants, causing a decline in the levels of dissolved.
Auxotrophic mutant Auxotrophic mutant is an organism having a growth requirement of specific nutrients not necessary in the parental strain.