Femur which is the thigh bone is the strongest largest and longest bone of human skeleton
Please refer the attachment for the correct answer
Answer:
Moves down the concentration gradient
Explanation:
Since diffusion moves materials from an area of higher concentration to an area of lower concentration, it is described as moving solutes "down the concentration gradient" (compared with active transport, which often moves material from area of low concentration to area of higher concentration...
Cell differentiation: when a stem cell changes to a specialized one.
