Effect of spring oilseed rape crop density on plant root biomass and ... by Cepuliene, Rita; Marcinkeviciene, Ausra; Velicka, Rimantas; Kosteckas, Robertas; Pupaliene, Rita / Estonian Journal of Ecology.
A study in Washington State gathered 154 first to fifth graders from two elementary schools. The students were given four gummy bears made with either xylitol or maltitol (types of sugars used in many types of sugarless chewing gum) three times a day during school hours. All were checked for plaque and bacteria in their mouths at the start of the study and six weeks later.
Because it is made of rubber. Natural rubber is made from the sap of the rubber tree. It is called latex, and it is a white sap similar to that of milkweed plants and dandelions. The word gum refers to the sap of plants, and gums are used for sealing envelopes and gluing things together.