Which pair of words describes what human activity is doing to the ozone layer in the troposphere and stratosphere,respectively?
A) increasing it, decreasing it
B) increasing it, increasing it
C) decreasing it, increasing it
D) decreasing it, decreasing it

Question

Which pair of words describes what human activity is doing to the ozone layer in the troposphere and stratosphere,respectively? 
A) increasing it, decreasing it 
B) increasing it, increasing it 
C) decreasing it, increasing it 
D) decreasing it, decreasing it

Quizplus · Accepted Answer

In the troposphere, human activities are increasing the concentration of ozone through pollutants like VOCs and NOx, which contribute to smog. In the stratosphere, human activities, particularly the emission of CFCs and other ozone-depleting substances, have been decreasing the ozone layer, although efforts like the Montreal Protocol have helped to reduce these impacts.

Which Pair of Words Describes What Human Activity Is Doing