you lift a large bag of flour from the floor to a 1-meter-high counter, doing 100 joules of wok in 2 seconds. How much power do you use to lift the bag of flour

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.