41. They also feed back into what we're doing. 42. They had mouths to feed back home. 43. Feed back on this would be appreciated.44. Many different types of plate or tube reactors use simple feed back control of the product temperature. 45. The change flows directly from and feeds back into the idea that celebrities are just like us. 46. Commonly used classes of semiconductor laser transmitters used in fiber optics include DFB ( Distributed Feed Back ). 47. Within the WBP are five individual branches that all feed back into to the larger Workbook Project community. 48. Reentrant was defined as a complex interwoven system in which the output can feed back into the input. 49. Those human relationships then feed back into the factors which then shape dynamics of the actual city itself. 50. What happens is, " people read messages from other people and feed back what they want to hear,"