Why do companies like nestle object to bottle deposit programs

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Which entry is in the wrong position in the table?

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.