How does acid rain (deposition) form and travel to effect the environment?

What element is able to combine with itself and hydrogen to form large molecules ?

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.

Will give ! ! widentify the advantages and disadvantages of renewable and nonrenewable energy resources.