Using snell's law. Determine what angle a light wave bends at when it leaves air and enters water at an angle of 30 degrees.

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.

490 n

f=125n a=2.5m/s2

conduct current i mean it makes sense