Someone answer correctly plate tectonic forces are responsible for which of the following? a.) adding rock material to earth's surface b.) removing rock material from the earth's surface c.) both adding and removing rock material from the earth's surface d.) plate tectonics does not affect the earth's surface

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.