Respiratory System for Kids (Breathing) by www.makemegenius.com

1) Complete: -Our muscles mix oxygen and food to create ..................

                      -As a result, these muscular cells produce ............................ and other waste substances that the lungs and kidneys must get rid of (deshacerse).

2) In the girl's description of the respiratory system parts there are some of them missing (faltando). What are they?