Carbon dioxide is a pollutant because it
A) is absorbed by the ocean and converted into insoluble carbonates.
B) is utilized when fossil fuel is burned.
C) is a waste product of photosynthesis.
D) cannot be recycled at a rate equal to its present production.
E) is replacing oxygen as the most abundant gas in the air.

Question

Quizplus · Accepted Answer

Carbon dioxide is a pollutant because it cannot be recycled at a rate equal to its present production. This leads to an increase in its concentration in the atmosphere, which contributes to the greenhouse effect and climate change.

Carbon Dioxide Is a Pollutant Because It