Why was the berlin wall initially created

What is associated with mid-ocean ridges?

Which statement best explains distribution of natural resources? people tend to settle in locations that have the resources they need for survival. some countries have resources that others lack, so trade between countries becomes vital. fossil fuels come from areas that have mountains and other areas that manufacture synthetic gas. areas with natural resources provide a higher standard of living and better quality of life.

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called