sometimes it also includes controlling the material they read. he died thirteen days later on 3 may at the age of 56. the word "stereo" replaced the word "hi-fi." "compound microscopes" have at least two lenses. but their pay rate remained the same. the shock is progressive and can be deadly if it is not quickly made well. some diseases are not stopped by antibiotic drugs. our bodies have an ability for self-repair, but that ability is limited. each of them are for separate areas of health which they research. transformers are an important part of electrical systems. 