1. the two main airways connecting the trachea to the lungs the thin walled airway connecting the pharynx with the

2.

bronchi

3. the back of the nasal cavity and mouth

air sacs within the lungs where the blood gets oxygen and

4.

gives up carbon dioxide

the section of the upper respiratory system that contains

5.

vocal cords

Which action best increases one’s stamina a) exercising when you feel like it b) saving so much that one like sleep c) refusing to exercise to save the energy needed to work d)exercising on a regular basis

Frankie is having difficulty developing a friendship with histeammate curtis. whenever frankie invites curtis to hangout with him at the park, curtis always says that he's busy.what is most likely preventing a healthy relationship fromforming? a)the boys are not being generous with their time andeffort.b)the boys are not communicating.c)both boys are too busy.d)the boys are on different teams.

The only part of the body that should touch the ball when setting in volleyball