Write a hypothesis about the use of an object physical characteristics to determine its density use the format if then because and be sure to answer the lesson question how can the density of an object be detemined

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.