1. Wind blows sand onto rocks and slowly breaks down the rock a. Mechanical Weathering b. Chemical Weathering c. Erosion d. Deposition

B. Chemical Weathering

Explanation:

Chemical weathering is the erosion or disintegration of rocks, building materials, etc., caused by chemical reactions (chiefly with water and substances dissolved in it) rather than by mechanical processes. This proves the sitiuation of sand seeping into a rock ans slowly breaking it.

answer; motor cortex;