Walking home from work late one night, jaydra suddenly hears footsteps behind her. her heart pounds, her muscles tense, and her mouth goes dry. these bodily responses are activated by her nervous system.

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.

the answer is b.) hydrogen bonds between bases.

d we did this already