One advantage of biodiversity in an ecosystem is that it

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.

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.

The importance of the mind as a part of the body is an example of: