Final answer:
Nevada Fall and Vernal Fall in Yosemite National Park were formed through the erosive action of water carving through solid rock.
Step-by-step explanation:
Nevada Fall and Vernal Fall in Yosemite National Park have a different history of development compared to the falls formed in hanging valleys. These two falls were formed through the erosive action of water carving through solid rock.
Water from the Merced River flows over the hard granite bedrock and gradually erodes the rock, creating steep cliffs. As the erosion continues, the cliffs retreat upstream, leaving behind the waterfalls. The force of the water hitting the solid rock at the base of the falls causes further erosion, deepening the plunge pools below.