41. One such widely prevalent and troublesome microorganism is Candida albicans. 42. Many of these compounds are related to biological activity of various microorganisms . 43. Ruminants and termites, for example, use microorganisms to process cellulose. 44. Microorganisms tend to have a relatively fast rate of evolution.45. Microorganisms are the causative agents ( pathogens ) in many infectious diseases.46. Microorganisms like " Staphylococcus epidermidis " colonize the skin surface.47. Ultraviolet radiation is used in several food processes to kill unwanted microorganisms . 48. Also of possible concern are the effects of fluoride on soil microorganisms . 49. In produce, microorganisms attach to the surfaces and biofilms develop internally. 50. Soil microorganisms also decrease pathogen and pest activity through competition.
