The glaciers produced during an Ice Age gradually move through the landscape carving valleys and dramatically changing the shape of mountains.
(The glaciers; produced; T:during an Ice Age) (The glaciers produced during an Ice Age; gradually move; through the landscape carving valleys) (The glaciers produced during an Ice Age; dramatically changing; the shape of mountains)
The glaciers The glaciers produced during an Ice Age The glaciers produced during an Ice Age
produced gradually move dramatically changing
T:during an Ice Age
through the landscape carving valleys
the shape of mountains