Carbon monoxide is a highly toxic gas. The combustion engine used in cars can produce very high concentrations of CO. Those who work in the garage for a long period would breath a dangerous amount of CO.Answer: A. Never leaving a car running in a garage.
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It is so other scientists can do the experiment and see if the get the same or different results
<span>According to the law of demand when price of a good or service goes up the quantity demand will go down. Every increase in price will result in lower demand for the product.</span>
