When graphically adding vectors in two dimensions, each vector arrow begins at the origin and proceeds in the direction
of the vector for a distance proportional to the magnitude of
the vector.
TRUE
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.