To be classified as a fossil, the organism must have lived and died more than 10,000 years ago. true false

Apart of an ecosystem that can restrict the growth of a population is referred to as

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.