You move to Mars and as a momento from Earth take your Ma-maw's mercury barometer. You place it outside in the Martian atmosphere and read a very low pressure. Does the pressure reading accurately reflect the atmospheric on the surface of Mars

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.