Weathering involves the O A formation of rocks and minerals at Earth's crust.

OB movement of rock fragments at Earth's surface.

OC physical and chemical breakdown of rocks.

OD transport of rocks and minerals through wind.​

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.