Raul has designed a research study in which subjects come to his lab and practice extension of the knee to a target angle with and without vibration. He is interested in determining whether vibration increases or decreases learning effects. What type of research is Raul doing

"social stratification refers to the way people are ranked and ordered in society. in western societies, stratification is primarily seen and understood as a result of socioeconomic status, which produces a hierarchy in which access to resources, and possession of them, increases from the lower to the upper strata"

answer; the answer to the first question is (king james ii was replaced by his daughter mary and her dutch husband william of orange;

the technology changed agriculture in an impacting manner since many people left the field work by a cellular or other technological appliances

the values of the selma marchers was to bring   their ability to vote into law. mlk was not hat march, which was protesting toward lbj