It's a process called weathering. In desert regions, rocks expand slightly in the day as they are heated by the Sun.When their roots grow into cracks, they force the cracks to widen, causing the rock to break into smaller fragments. So, weathering is the breakdown of rock into smaller pieces.
>>When their roots grow into cracks, they force the cracks to widen, causing the rock to break into smaller fragments. So, weathering is the breakdown of rock into smaller pieces.
