Matching Pairs ScienceOnline version Science by Margine Cascayan 1 Reflects radio waves 2 Layer where jets fly 3 Lowest layer in the atmosphere 4 Prevent ultraviolet rays from reaching the atmosphere 5 Higher layer in the atmosphere Troposphere Stratosphere Ionosphere Exosphere Ozone layer 1 Reflects radio waves 2 Prevent ultraviolet rays from reaching the atmosphere 3 Layer where jets fly 4 Higher layer in the atmosphere 5 Lowest layer in the atmosphere Ozone layer Exosphere Ionosphere Stratosphere Troposphere