Answer:
5 layers
Explanation:
(think of this as a diagram)
last is is exosphere (space) SATELLITE (800-6200)miles
ionosphere/thermosphere (where air gets thinner,less oxygen and dust) AURORA (100-200miles)
mesosphere METEORS (50 miles)
stratosphere AIRPLANE/AEROPLANE
the first is troposphere (zone of weather) 7 miles
*EARTH*