I think the answer is man
I think the answer is A. Usually people hunt bison so i think over hunting is whats causing the decimated of the bison.
Asn or Asp, B AAT, AAC; GAT, GAC RAY
False.
There are several good mutations that have ensured the survival of species. Typically helpful mutations help the creature adapt to its environment or protect itself from predators.
I hope this helps! :)