Gum or Resin is like the sap that comes from trees and other
plants
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More on the yes side. Gum has tree resin in it, tree resin is
what makes it stretchy. If you put more of it in regular gum, you
get bubble gum!
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No - in fact, nowadays, gum doesn't even contain "gum" (chicle).
Gum today is made of a specially concocted plastic resin with
flavorings added to it. The resin is harmless, of course.