Answer:
scientists discovered all livings things are made up of cells by using microscopes and going out to the wild forest and jungle bring back dead bodies and expiemrnet on them just like how they discovered king tut existed and other ancient people like him. The difference between living things and nonliving things living things breath and nonlivings don't.
Step-by-step explanation:
I hope this answered your question and was the right answer also I'm sorry if I get you this answer wrong I apologie but the answer I wrote should be correct to your answer:)