6. which of the following are abiotic factors? (check all that apply) [] elephant [] tree [] water [] grass [] air [] bugs [] soil

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.