Compare the three main regions of africa (northern, western, central, eastern, and southern africa)

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Someone me with this: a mineral' is determined by its actomic structure.

In which way are mercury and venus similar? they both rotate from east to west. they are both small and rocky. they both have thick atmospheres. they both are similar to earth in structure.