Relier Pairs ScienceVersion en ligne Science par Margine Cascayan 1 Layer where jets fly 2 Prevent ultraviolet rays from reaching the atmosphere 3 Higher layer in the atmosphere 4 Reflects radio waves 5 Lowest layer in the atmosphere Exosphere Ionosphere Troposphere Stratosphere Ozone layer 1 Higher layer in the atmosphere 2 Lowest layer in the atmosphere 3 Reflects radio waves 4 Layer where jets fly 5 Prevent ultraviolet rays from reaching the atmosphere Ionosphere Ozone layer Stratosphere Exosphere Troposphere