Large angular blocks of rock especially common in poorly cemented rock like shales and ss. Physical Weathering Processes: Plants Plant roots grow into rock cracks and make them split/fall apart.
(Plants Plant roots; grow; into rock cracks) (them; fall; apart) (Plants Plant roots; make; them split/fall apart) Context(Plants Plant roots make,List([122, 171))):(them; split; apart)
Plants Plant roots make,List([122, 171))
Plants Plant roots them Plants Plant roots them
grow fall make split
into rock cracks
apart
them split/fall apart
apart