Life is tough .keep ur head up. Don't get ur heart broken like me

Do not use this medicine with milk, cheese, or other dairy products. what end punctuation needs to be added to the above bolded word?

Aids is growing fastest in the poorest countries of africa. these nations don’t have enough doctors, medical labs, or money for medicine. a recent study showed that only a small percentage of hiv-infected children in africa are getting any medical treatment at all. what central idea is emphasized in both sources? the hiv/aids epidemic in africa is serious. the hiv/aids epidemic in south africa is serious. the hiv/aids epidemic among african children is serious. the hiv/aids epidemic among south african children is serious

Which of the following is an example of a periodical?