Chloroplasts use to make sugars from carbon dioxide.

Idont really understand

The answer is c) organisms that are sensitive to changes in temperature would die.

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.