Earth's Crust, Mantle, Core

Earth’s Layers

Say what …?

Hi @aschoff,

Do you intend to create a forum for your course?
If this is the case, it is best to change the title of this topic to:
[Course Forum] Forms of Energy by aschoff
and add a link to your course: https://www.memrise.com/course/2132847/forms-of-energy/