Can someone be kind of enough and help me with my biology test ? tyyy

Why is it important that fibrin is insoluble in water?

What is the most important inorganic material for livings things? ! due tomorrow!

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.