Because of the variability of oxygen concentrations in aquatic and especially freshwater environments, oxygen has been a major force in the evolution of fishes.
temperature
Effect of temperature on metal toxicity to zebrafish: frome gene to organismal responses
During recent years ecotoxicology has been an emerging field and its experimental focus has been expanded from using mainly chemical stressors (e.g. cadmium) to assessing the effects of natural or non-chemical stressors (e.g.
