In a food chain, energy moves from producer to herbivore or and then on to other consumers.
Answer
energy
food web
omnivore
all of the above

To other consumers.

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.