What is the most important unit of social organization?

Which property of soil depends on the size of particles? color odor temperature texture

How did the europeans design the national borders of africa? why?

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.