Which best describes the effect of j. j. thomson’s discovery?

J.J. Thompson is a British physicist who discovered the electron by a series of experiments which is designed to study the nature of a cathode ray tube. His discovery showed us that an atom can be split into smaller parts. He was a pioneer in the study of the model of an atom.

They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).

Well to my expert knowledge and my exquisite calculations i think the the negative ion # 412 is the key to sucess