Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the
correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag
the item to the trashcan. Click the trashcan to clear all your answers.
Label the internal structure of the earth:

Inner Core
crust/Lithosphere
Lower Mantle
Outer Core
Upper Mantle
Crust
Astronosphere