A phenomenon that occurs in aquatic environments as dissolved oxygen becomes reduced in concentration to a point detrimental to aquatic organisms living in the system.
The reduction of oxygen in tissues below levels which are considered to be normal.
a very strong drive resulting from oxygen deficiency in bodily tissues (short of anoxia)
a very strong drive resulting from a deficiency of available oxygen in the blood and bodily tissues (short of anoxia)
oxygen deficiency causing a very strong drive to correct the deficiency
