In an elastic collision, kinetic energy is transferred from one particle to another, but the total kinetic energy remains constant. question 1 options: a. true b. false

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.