What's a ventifact? A. The side of a sand dune protected from wind
B. A wind-borne deposit of sand
C. A rock formation shaped naturally by wind
D. A wind-borne deposit of nutrient-rich soil

Nuclear experimentation is a major global issue that affects relationships between countries. describe why countries try to limit the testing of nuclear weapons.

What is the difference between external & internal migration

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.