It is said that Galileo dropped objects off the Leaning Tower of Pisa to
determine whether heavy or light objects fall faster. If Galileo had dropped a
5.0-kg cannon ball to the ground from a height of 12 m, what would have
been the change in PE of the cannon ball?

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.