Drag each tile to the correct location.
Classify the planets based on their composition.

Based on the information in the graph, what can you conclude about humans in the world in general?

Where was oil production at its highest in the 1980s and still remains important to the russian economy? central asia the ural mountains russian siberia the caucasus region

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."