The statement that states have intangible boundaries is false. Your answer is B
One result of the civil wars in Angola and Mozambique was civilian support for rebel groups
The war began in 1977, just about two years after the war that made the country attain its independence
hope this helps
This movement is called convection. It can be found in liquids, gasses and rheids - solids that can also experience movement ( on a big time scale), such as the earth mantle. One of the types of convection is diffusion: net movement of gasses from higher to lower concentration areas.
