weathering

                                 Weathering 

Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away .

                                                

Types : 

                                       It does not involve the removal of rock material. There are three types of weathering, physical, chemical and biological.