The world’s population was at an all-time high in the year 1900 2000 1800 1700

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

Which gold led israelis and palestinians into conflict

Describe some effects of the rise of communism in the soviet union?