Risk factors has the most immediate impact on a person's health?

How does nitrogen oxides are produced and their air environment impact

Does anyone know how to dissect a frog or baby squid?

What are possible signs and symptoms of drug addiction? check all that apply. declining physical appearance and health failing to meet family, school, or work obligations needing less and less of a drug to get the same effect using drugs when there is no health benefit failing in attempts to stop using a drug stealing to get drugs