In which layer of atmosphere does commercial aircrafts usually fly?A. StratosphereB. TroposphereC. MesosphereD. Thermosphere 0 0 votesArticle Rating Subscribe LoginNotify of new follow-up commentsnew replies to my comments Label {} [+] Name* Email* Label {} [+] Name* Email* 0 Comments Oldest Newest Most Voted Inline FeedbacksView all comments
