The Sticky Secret of Pine Trees
resinresinliquidprotect the tree when the bark is cut or broken., and it is a thick made by the tree. Because can trap germs and tiny insects, it helpsHave you ever touched a pine tree and felt something sticky on the bark? That sticky stuff is called
Over time, the resinresin. can harden and form a shiny, glassy lump on the tree. Next time you see a pine tree at a park, look closely at the trunk to spot drops of dried