ramon finds a rock that has a plant growing out of it. at the base of the any, he can see some cracks forming in the rock. what type of physical weathering is this?

The type of physical weathering described in this scenario is known as root wedging.

what is one way to determine whether a rock has experienced exfoliation

One way to determine if a rock has experienced exfoliation is to look for sheet-like layers or slabs of rock peeling away from the surface of the main rock. This process occurs due to the expansion and contraction of the rock surface, typically caused by temperature changes, which leads to the separation of layers.