E
What is the correct sequence of events from an older rock to the formation of
a new rock?
O A) deposition --> erosion --> compaction and cementation --> burial
OB) burial --> erosion --> deposition --> compaction and cementation
OC) erosion --> deposition --> burial --> compaction and cementation
OD) compaction and cementation --> erosion --> burial --> deposition

In an experiment examining the effects tai chi on arthritis pain, callahan (2010) selected a large sample of individuals with doctor-diagnosed arthritis. half of the participants immediately began a tai chi course and the other half (the control group) waited 8 weeks before beginning. at the end of 8 weeks, the individuals who had experienced tai chi had less arthritis pain that those who had not participated in the course.