Bone Marrow contributes to the production of red blood cells (RBC's)
Equal and balanced distribution ofdevelopment activities throughtout the country and providing similar standard of services and facilities to all the people living in every part of country is called proportional development.
Well you haven't provided any answer options so answer options include things like mountain climbing. Mountain climbing involves multiple systems and functions over a long period, with moderate being something like hiking the same mountain.
