Your dashboard's instrument cluster has a light on it that either says OIL or looks like an old fashioned oil can. What should you do if you see this light while you're driving? Stop the car! This is one warning light that isn't joking. The oil light comes on when your engine suffers a drop in oil pressure. Without oil pressure it can't lubricate itself, and the result is self-destruction, meaning you have to do some seriously expensive internal engine repairs.
An anaerobic organism or anaerobe is any organism that does not require oxygen for growth. It may react negatively or even die if oxygen is present. An anaerobic organism may be unicellular (e.g. protozoans, bacteria) or multicellular.
A genus of gram-negative, rod-shaped, nonfermenting bacteria (family Achromobacteraceae) that are either motile and peritrichous or nonmotile. They are strictly aerobic; some strains are capable of anaerobic respiration in the presence of nitrate or nitrite; their metabolism is respiratory, never fermentative; they do not use carbohydrates.