Question

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

Answer 1

Regrettably, I believe you missed to include the choices that would have been important for us to be able to answer the question given above. However, on a general note cicadas have widely apart prominent eyes, short antennae and wings that are fibrous. Apart from that, they also have an exceptionally loud song. 

Answer 2

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