The biosphere can best be defined as

The part of the earth's crust, waters, andatmosphere that supports life.

The part of the earths crust, water, and atmosphere that supports life.

Ithink the answer is d.

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.