Which percentage of the world's population lives in north america

What is associated with mid-ocean ridges?

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals