What question can you ask yourself if you are trying to determine if a change is a physical or chemical change?

What element does susan b. anthony include in this passage to strengthen her argument?

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide