Which of the following is true regarding transverse waves? A. They only occur when the medium is a solid.
B. The directions that energy and matter travel in are parallel.
C. A hockey puck moving forward and spinning on ice is an example of a transverse wave.
D. The directions that energy and matter travel in are perpendicular to one another.

in a transverse wave, The directions that energy and matter travel in are perpendicular to one another.

these waves are types of mechanical waves that doesn't require any material medium to transfer.

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.