Why does ice float on water? a. the temperature of ice is lower than the temperature of water b. the temperature of water and ice are the same c. the density of ice is less than the density of water d. the density of ice is greater than the density of water

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.