Which of the following has a natural ph that is basic? rain fresh water lakes sea water tap water

Kanother question for korean stuff it's for 38 points.

Son las cinco y cinco. son las nueve menos diez. what time is it. in english

Wich of the following is true about social classes. a.they are mainly based on gender.b.people in most society's cannot improve their status.c.they are mainly based on age.d.they can improve their satus by getting a good education.