Name 3 demographics who usually require more than the RDA for protein?

please explain answer fast its urgent

  a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set

The answer is letter c

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.