The Milky Way galaxy contains interstellar matter that may a. Form new galaxies b. Form new stars c. Form new universes D. Form new constellations

true tan speed = ang vel x radius

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.