Answer:
C. Different organs working together to do a job
Explanation:
Pretty self explanatory, sets of organs make up an organ system.
Hopefully this helps!
Brainliest please?
I think the answer is C. They are trying to emotionally avoid the exam by distracting themselves
Hope this helps :)
The atria of the heart merely need to allow blood to flow into the ventricle, and therefore aren't very muscular.
The ventricles of the heart need to actually pump blood to the rest of the body, whether to the lungs or the the rest of the body.
I think that the bright light would be the "stimulus" and the pupil constricting would be the "response".