Question

Widespread use of catalytic convertors in cars has significantly reduced_____emissions.

• A. $HN{O}_3$
• B. $H_{2}S$
• C. $CO$
• D. $C{H}_4$

Answer 1

Answer: (C)

$CO$

As with many direct and indirect greenhouse gases, reductions in carbon monoxide emissions can most effectively be made through direct reductions in fossil fuel use. There is some evidence that the widespread use of catalytic convertors in cars has significantly reduced carbon monoxide emissions from this source.