Question

Air moves into the _________________ and down a hard tube called a __________________________ (or windpipe), which branches into two ______________________ (singular is _____________ ).

Answer 1

Answer:

Air moves into the _nostrils_ and down a hard tube called _trachea_(or windpipe ), which branches into two __alveoli_(singular is alveolus).

Answer 2

Air moves into the _nostrils_ and down a hard tube called _trachea_(or windpipe ), which branches into two __alveoli_(singular is alveolus).