What kind of rock is formed at a junction where two tectonic plates pull away from each other?

a igneous rock

b sedimentary rock

c isotopic rock

d metamorphic rock

How do cells grow and reproduce to maintain homeostasis?

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

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.