Which best describes the meaning of the statement "lf A, then B"? A. If A is true, then B might be true.
O B. If A is false, then B might be false.
C. If A is false, then B must be false.
O D. If A is true, then B must be true.

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

Lava and other matierls luanced from a volcano and into the air are referenced as

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