A How can carbon dioxide be considered a pollutant when it is a natural component of air?
Carbon dioxide is considered a pollutant even though it is a natural component of air, because it is
harmful to all living organisms.
b Carbon dioxide is considered a pollutant when larger concentrations than normal are present in the
air as a result of human activity
Carbon dioxide is considered a pollutant, because it forms harmful chemicals when mixed with other
pollutants in the air
d Carbon dioxide cannot be considered a pollutant under any circumstances.
С
Please select the best answer from the choices provided
A
B
ОООО
С
D
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