As glaciers formed, eroded, and deposited sediments, new valleys were formed and fed with water, while other waterways were abandoned.
(glaciers; formed; deposited sediments) (other waterways; were abandoned; ) (glaciers; eroded; ) (new valleys; were formed; T:while other waterways were abandoned) (new valleys; fed; with water)
glaciers other waterways glaciers new valleys new valleys
formed were abandoned eroded were formed fed
deposited sediments
T:while other waterways were abandoned
with water