How is 90° north latitude different from 90° south latitude

An education expert is researching teaching methods and wishes to interview teachers from a particular school district. she randomly selects ten schools from the district and interviews all of the teachers at the selected schools. which type of sample did she use in this study? a)systematic sample b)probability sample c)stratified sample d)cluster sample

When recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous years?

Many of these mythological stories were filled with violence. why do you think this is?