What are some PSA topics?

Why did Americans disapprove immigration in the 1920's? What kind of home environment will positively influence the learning potential of the young kids? What are ways of conserving the environment? What does Institutional expertise mean? What does a king or queen call the people they rule? What is major constituent of air? What type of cancers can you get from pollution? Was Odetta a lesbian? What was the prohibition of the 1920s effect on the society? Ozone air purifier? Which disease is linked to smoking and results in a reduction in he number and elasticity in alveoli? What do you do before a debate? What is a homeless child called? Which zone rich in ozone gas? How do you feel about having a managers responsibility in todays world characterized by uncertainty ambiguity and sudden changes or threats from the environment? What is involved in an ambulatory electroencephalography? Does the bell ringer for the Salvation Army Christmas Charities get paid? What movies has Eddie Redmayne been in? Who is alejandrina valdez? What are some eco friendly materials?