A series of chemical equations used to indicate the step-by-step processes by which a chemical reaction occurs is called a(n) . A. equation series B. reaction mechanism C. catalyst series D. All of the Above E. None of the Above

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.