Answer:
Close your eyes and think of peace ful thoughts.try to feel relax and at ease at times
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)
Answer:
I would be the extension of the trunk
Explanation:
The erector spinae muscle extends the vertebreal column. [1] It is formed of 3 muscles and its fibers run more or less vertically throughout the lumbar, thoracic and cervical regions. It lies in the groove to the side of the vertebral column. In cervical region it is covered by nuchal ligament and in thoracic and lumber region by thoracolumbar fascia.
The second trimester is when the respiratory system is mature.
