The cracking of rock due to heat is an example of . a.
erosion
b.
physical weathering
c.
chemical weathering
d.
none of the above

B. physical weathering

Explanation: I can confirm the first person who answered! This answer is correct on edge2020 :)

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

idk lol use google m8