Scientist are interested in increasing the number of florida panthers found in the wild. one scientist proposes an experiment where state officials are sent out to feed wild panthers food with increased nutrients. this will panthers live longer, healthier lives. scientist take raw chicken and add nutrients. in chicken one, scientist add iron (fe) to the meat. in chicken two, scientist add vitamin c to the meat. the scientist add nothing to chicken three. what is the scientific term for the changes made to chickens one and two?
a. control
b. variable
c. adaption
d. scientific method
answer i will give 15 points.