WHAT DOES RESIN BOUND DRIVEWAYS BIRMINGHAM MEAN?

Rosin is obtained from pines and Several other crops, typically conifers.[4] Plant resins are commonly manufactured as stem secretions, but in some Central and South American species of Dalechampia and Clusia They're developed as pollination benefits, and employed by some stingless bee species in nest construction.What on earth is resin? Put basica