I can provide one reason, but I am shaky on the other. Basically, the bone marrow (the foam stuff in your bone) creates red blood cells, which are vital for survival. Red blood cells transport oxygen to the lungs, and all the other important cells that need it. This proccess is called diffusion. I hope this is a little helpful!
Thanks,
LexaBookworm
back bone and water
It is the function of bone marrow.
Two types of bone tissue are compact bone and spongy bone. Compact bone functions as the basic supporting tissue of the body. Spongy bone's function , meanwhile, is to make up most of the short, flat, and irregular bones in your body. It also makes up the ends of long bones.
thigh bone finger bone
it is a bone
what is the principal function of the bone
For formation of bone
sides of the bone
nothing
The bone protects it.
The two types of marrow are :  ● Red Marrow ● Yellow Marrow ● The function of the red bone marrow is to produce new blood cells ● The yellow marrow stores fat that can be served as an energy reserve. √ :D :P B-)
brode