Question

which of these is the best example of physical weathering?
o insects eating a dead tree
o a bulldozer pushing soil
o ice fracturing a stone
o acid rain dissolving limestone

Explanation:

Physical weathering involves breaking down rocks without changing their chemical composition. Insects eating a dead tree is biological activity, a bulldozer pushing soil is human - made mechanical action not weathering, acid rain dissolving limestone is chemical weathering. Ice fracturing a stone is physical weathering as water freezes, expands, and breaks the stone physically.

Answer:

ice fracturing a stone