n Ecology 3) To get calcium, a porcupine chews on an antler that has fallen from a deer. The antler is O A. an abiotic factor. o B. a biotic factor. O C. a limiting factor. O D. a density independent factor.

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.