Answer:
(especially of a leaf or shell) having a round-toothed or scalloped edge
Explanation:
Air pressure (inside the lungs) is lowest when lung volume is highest, so the answer is B. when you breathe in your lungs expand, which makes the air molecules spread out, therefore the pressure is lower.
Hi
Inside your ear there is water this water is detected in your ear and a signal is send to your brains so you know your balanced. If you have an infection. This signal is blocked so you can't feel if you're balanced or not.
