When the water expands as ice forms during a freezing cycle, pressure is exerted on the rock, leading to cracking or exfoliation.
(the water; expands; T:during a freezing cycle) (pressure; is exerted; on the rock; leading to cracking or exfoliation; T:When the water expands as ice forms during a freezing cycle)
the water pressure
expands is exerted
T:during a freezing cycle
on the rock leading to cracking or exfoliation T:When the water expands as ice forms during a freezing cycle