How the plants survive in tropical rainforest?

Many archeologists and anthropologists disagree with dr. thorne's view.  thorne strongly believes that what many calls "homo erectus"  was in fact  homo sapiens,  and that they migrated out of africa almost 2 million years ago and dispersed throughout europe and asia. that's way different  from what scientists have always believed about the evolution of the species.

Aclimax community is described as a biological community of plants,animals, and fungi. the climax community is the final stage of succession, meaning its going to be unchanged till it is destroyed (by a fire i i hope this is a good description : '3