1) Microscopic hairs of the windpipe are always __________.

Question

2) The cilia of the windpipe move harmful substances __________.
3) You build a heavy gust of air when you __________ or __________.
4) Coughing and sneezing help push harmful substances from the __________.

Answer 1

Anna/Ben/A/Anonymous -- please use only one name for your posts.

Answer 2

I have any idea for these.

Answer 3

funk you all they no answer !@#$%^&