Before her baby was born, caroline smith visited the doctor for care.

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

Which gas prevents the spread of fire and extinguishes it? is a type of compressed gas that prevents the spread of fire and extinguishes it.