Answer:
I would say they would all be feternal, but its your opinion
Explanation:
Answer:
Independent: electronics in room
Dependent: hours of sleep
Control: school nights, night routine, lighting of room, the time the person decides to go to bed
Confounding: the person(?? not entirely sure on this one)
The affect salt water has on a body is that you can dehydrate faster or quicker it is very harmful cause drinking to much can and will kill you
