Because of his asthma,Alec should pay attention to the measurement known as

Question

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The AQI (Air Quality Index) is a measure of how polluted the air is and is used to provide information on health effects that may be related to the levels of certain pollutants, including particulate matter, ozone, sulfur dioxide, nitrogen dioxide, and carbon monoxide. As someone with asthma, Alec should pay attention to the AQI to determine if it is safe for him to be outdoors or if he needs to take extra precautions to protect his health. HEV (High-Efficiency Particulate Air) refers to a type of air filter and is not directly relevant to Alec's asthma. CFC (chlorofluorocarbons) and PCB (polychlorinated biphenyls) are environmental pollutants that are not directly related to Alec's asthma.

Because of His Asthma,Alec Should Pay Attention to the Measurement