1.

Which one of the following is not pollutants.A. `CO_(2)`B. `CO`C. `SO_(2)`D. `NO_(2)`.

Answer» Correct Answer - A
`CO_(2)` has little pollution value at concentration present in air. It is more of a green houses gas. Rather in excess found at ground level, `CO_(2)` is useful for higher level of photosynthesis. It is more common in soil where it inhibits root growth.


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