Only about 10 percent of the energy in an organism is passed on to the next level of a food chain. look at this food chain: grass → rabbit → hawk

what percentage of the energy stored by the grass is passed on to the hawk?

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.