Paragraph 3 supports the idea that one problem with the broken-forest hypothesis is that A. in broken forests with an uneven canopy structure, gliding is difficult, and it is easy in forests where the trees are all about the same height B. ecologists in different region have found that gliding animals are as abundant and varied in some forests of Africa and the New World as they are in Southeast Asian forests C. ecologists have found gliding animals in areas of Southeast Asia where trees are connected by vines and not found them in Amazonian forests where trees are not connected by vines D. with the fewest woody vines connecting the tops of trees, the forest in Southeast Asia turn out to have the most gliding animals