Explain the beak carnivores birds like eagle have

The shape of a bird's beak depends on its diet. ... Eagles and other birds of prey have a sharp, hooked beak in order to more easily tear the meat of the animals they feed on.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.