How dose gum stretchability relate to bubble size?

Well the stretchability relates to bubble size because the strechier the gum is the bigger bubble it will be able to make.

answer; /// i do believe its (heredity); good luck

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.