Define structual trait

Structural adaptations are physical features of an organism like the bill on a bird or the fur on a bear. Other adaptations are behavioral. Behavioral adaptations are the things organisms do to survive. For example, bird calls and migration are behavioral adaptations.  The longer beak helps the bird catch more food.

Explanation:

moving ball hits still ball. mover stops, hit ball moves. momentum transfer.

it breaks and dirupture other materials and other sencews from the bottom