There Is a Suite of Plant and Animal Groups Whose

There is a suite of plant and animal groups whose distribution is restricted to the continents of the Southern Hemisphere. This phenomenon can be explained by

A) similarities in the climate and soil type of all the southern continents.
B) the dispersal ability of these organisms-they can disperse quite long distances but not as far as the Northern Hemisphere.
C) the past connection of the Southern Hemisphere continents and their subsequent moving apart.
D) movement over ancient land bridges.
E) relatively few human introductions of biota between the Northern and Southern Hemispheres.