Cicadas are a type of insect the song of the cicadas is a sound of summer in many parts of the country which of the following facts about the cicada demonstrates a pattern observed by scientist

Some species of cicadas emerge from the ground every 17 years. (Apex)

a polar bond is formed when electrons are shared unevenly between atoms

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.