Which of the following do lewis structures us understand? a.) the exact structure of a molecule b.) the number of electrons that are involved in the bonding of the molecule c.) the total number of electrons in a molecule d.) how electrons attract other electrons in a molecule

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.