Question

6 which air pollutant contains ozone?
a acid precipitation
b carbon monoxide
c cfcs
d smog
use the figure below to answer question 7.
7 what is the function of the well in the figure above?
a to generate electricity
b to monitor quality of groundwater
c to prevent pollution of nearby land
d to treat hazardous water

Explanation:

A well is typically used to access groundwater. In the context of environmental monitoring (related to the landfill shown with liners etc.), a well near an underground water source would be used to check the quality of the groundwater. It's not for generating electricity (no such infrastructure indicated), not mainly for preventing land pollution (liners might be for that), and not for treating hazardous water (no treatment equipment shown).

Answer:

B. to monitor quality of groundwater