30) Which part of the human digestive tract absorbs nutrients for passage into the blood? * esophagus
appendix
villi
alveoli

What is one benefit of a non renewable resource, such as natural gas? a. generates large amounts of electricity b. less expensive c. produces pollution d. will run out eventually

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

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.