Earth's Changing Crust

The video tutorial explores the geological history of Earth, focusing on the formation and breakup of the supercontinent Pangaea. It explains the two main types of Earth's crust: continental and oceanic. The video delves into the movement of tectonic plates, which causes earthquakes and volcanic activity, highlighting the San Andreas Fault and the process of subduction. It concludes with a discussion on the Ring of Fire, a region known for its frequent earthquakes and numerous volcanoes.

Explain the process of subduction as described in the text.

What is the Ring of Fire and why is it significant?