Which structure should you expect to find in any type of cell

Explain how scientists use geologic time to determine the age of landforms.

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?

The earths core is made up mainly of what 2 substances? 2. like an egg, earth has a core, a layer surrounding the core, and a thin, hard outer layer. which layers of the earth match the layers of an egg?