Segmentation is an example of which of these? A. morphological trait
B. coelom type
C. body plan
D. embryonic development

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Regarding most of the narrator’s story, which word best describes the tone?

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.