Overview
I'm working on a geology question and need the explanation and answer to help me learn.
The video DOWN TO EARTH showed some new concepts and ideas that you might have not already known. In this, your first, Video Discussion, 1) please identify four of these new concepts and ideas, 2) explain each of them in your own words, 3) tell how this video has changed or not changed your thoughts about our Earth and its processes.
the link to the video.