EXPERT HELP: Some species can reproduce sexually or asexually. In which two situations is sexual reproduction advantageous? A. When no individuals of the same species are available for mating

B. When many individuals of the same species are available for

mating.

C. When the individuals live in a stable environment in which they

thrive.

D. When the individuals live in an environment that suddenly

changes.

What role do bacteria play in the carbon cycle

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.

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.