If the distance is 16m and the time is 4 seconds what is the speed?

4m/s

Explanation:

Speed=distance/time

So the speed will be 16m/4s which gives 4m/s

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.