An electric drill transfers 200 J of energy into a useful energy store. It also transfers 44 J of energy by sound and 48 J of energy by heat. What is the efficiency of this drill?round your answer to the nearest whole number

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.

option number c is the right answer.