Write your answer in scientific notation then Round to the correct significant figure.

the body's situation won't change the forces are equal opposit and on the same body

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.