Teacher resources and professional development across the curriculum
Teacher professional development and classroom resources across the curriculum
Learner Express: Modules for Teaching and Learning
While it may seem contrary to our common experience, on average, soil only extends about one meter below the surface. Compared to the size of the Earth, soil is just an extremely thin veneer, or layer, on the surface. Run Time: 00:01:37
D. Earth is layered and has a solid crust, hot, convecting mantle, and a dense metallic core.