I am studing for human performance and the swales program is giving wrong answers..and its not just human perf.. all of the subjects has a few wrong answers.
According to program the iris control the amount of light entering the eye.
YES thats true. But in order for more light to enter the eye, the iris wil expand to open the pupil so that more light can pass.
They say it will contract so that the pupil size can increase.. HOW??????
Be carefull not to get confused.
just my 5 cents...