Agreat deal of the blue ridge was eroded. the eroded rock eventually finally settled in virginia’s coastal plain. what process caused this?

The process is called Erosion. During the Erosion, materials from one place such as soil and rocks will be transport to another location. The process is also contrast to the process called deposition which responsible for the control of the arrival of the materials to a new place like the rocks from Blue ridge Mountain to Virginia's Coast. 

The phenotype of the offspring will be 100%tall