Which of the following is expected to court if a keystone species is removed from an ecosystem? A: a niche is eliminated B: competition is reduced C: other species move toward stable populations D: the ecosystem collapses

Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.