Answer:
A peak flow meter is a portable, inexpensive, hand-held device used to measure how air flows from your lungs in one fast blast.
Explanation:
The pairs of activities that can best help a dancer develop better stage performance would most likely be muscle-strengthening and balance/stretching.
When you think about it - dancers obviously need muscles to a certain extent in order to be able to move in a specific way but they also need good balance and the ability to stretch. All of these things play an important role in dancing :)
Answer:
2nd line of the immune system
Explanation:
