What is the function of bone marrow?
A. to harden the bones
B.To make blood cells
C.to change cartilage into bone
D.To remove waste from the body

Which of the following body parts is made of cardiac muscle?
A. heart
B. biceps
C. stomach
D. bloodvessles

Respuesta :

Bone marrow is to make blood cells B
cardiac muscle is the heart A
What is the function of bone marrow?

Answer: B. To make blood cells.

Which of the following body parts is made of cardiac muscle?

Answer: A. Heart