Blank cells must be in osmotic equilibrium with their surrounding environments, because if they swell or shrink their membranes will rupture

Your answer will be b action plan.

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.