Psychrophiles; Bacillus Pyschrophilus, Clamydomonas Nivalis. Psychrotrophs; Listeria Monocytogenes, Pseudomonas Fluorecense. Mesophiles; E. Coli, Trichomonas Vaginalis. Thermophiles; Geobacillus Stearothermophlus, Thermus Aquaticus. Hyperthermophiles; Pyrococcus Abysii, Pyrodictum Occultum