Whats an example for electromagnetic force

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone

In "the pig," what is the main effect that the piglet initially has on kibuka?