What is the cause of mechanical weathering?

a. natural acids

b. physical forces

c. sunlight

d. rust

Mechanical weathering is caused by physical forces such as ice wedging, pressure release, plant root growth, and abrasion.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates