<span>Yellow marrow fills the canals of long bones, and red marrow is found in the rounded ends of long bones (for example, the femur). Red marrow is made up of components of blood (red & white blood cells, platelets), while yellow marrow is primarily composed of fat cells.</span>
i think it’s the last one on question number one, and the first one on question two.
The answer to this is A because groups of cells do form tissues.
Explanation:
Obtains nutrients and removes waste produced by the body...