It would be easier to go back to the style of living that existed before the 1800s

How can conribute natural resource management with development

Push-and-pull factors contribute to

Donald is studying the eating habits of all students attending his school. he samples the population by dividing the students into groups by grade level and randomly selecting a proportionate number of students from each group. he then collects data from the sample. which type of sampling is used? select the correct answer below: systematic sampling convenience sampling stratified sampling cluster sampling