Second layer of atmosphere Stratosphere extends from 12 Km to …..? A) 40 km to 45 km B) 45 km to 50 km C) 50 km to 55 km D) 55 km to 60 km Related MCQs: Third layer of atmosphere Mesosphere extends from …..? Fourth layer of atmosphere Thermosphere extends from …..? Which layer of the atmosphere is the one, where we live in? Which of the following layer of atmosphere helps in radio communication?