Natural Selection.
It favors the better adapted organisms.
Answer:
cold with high salt content
The naked mole rats' population increases by the reproduction of the queen. The colony has one queen that may produce as many as 30 pups in one litter. The female can live up to 18 years, continues to breed and produce every 80 days.
Well the stretchability relates to bubble size because the strechier the gum is the bigger bubble it will be able to make.
