If a river has a high gradient and a large sediment load composed of a large percentage of bed load, the direct result would be
a) a meander

b) a tributary

c) an oxbow lake

d) a braided stream

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.