any plant
The 2 kinds of weathering are the Mechanical or Physical Weathering and the Mechanical Weathering.
mechanical weathering (by wind or water or perhaps tenacious plant roots or human activities)
physical weathering
frost wedging ?
One kind of Mechanical Weathering is called ice wedging.
chemical and mechanical
No. That is mechanical weathering. Weathering by sand or other matter carried in the wind is a special kind of mechanical weathering called aolean weathering. Weathering by acid rain is an example of chemial weathering. Limestone is particularly subject to this. Illegibility of tombstones in old garveyards provide a good illustration of this.
Thermal expansion causes repeated expansion and contraction within the rock. This repeated stress breaks bonds and eventually causes the rock to crack. Thermal expansion is classified as a type of physical or mechanical weathering.
Chemical weathering
Chemical weathering
Freeze-thaw weathering occurs when water seeps into cracks in rocks, freezes, expands, and creates pressure that can cause the rock to fracture or break apart. This process is common in regions with climates that experience freezing temperatures.
Chemical weathering