When the male sex cell which is the unites with the female sex cell, takes place. a) sperm b) egg c) fertilization d) ovulation e) endometriosis

The answers are :

* sperm

* fetilization

stridor can't collapse a lung.

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.