Question

question 1
how is mechanical weathering best described?
the buildup of rock formations over time
the breakdown of rock through decomposition of chemicals
the buildup of chemical deposits on the surface
the breakdown of rock through mechanical disintegration and physical stress

Explanation:

Mechanical weathering is about physical processes. The first option is about buildup (not weathering). The second is chemical (not mechanical). The third is chemical deposit buildup (not mechanical weathering). The fourth mentions mechanical disintegration and physical stress which are key in mechanical weathering.

Answer:

The breakdown of rock through mechanical disintegration and physical stress