BIOLOGY

what is diffusion 

-diffusion is the movment of molecules from an area of high concentration to an area of low concentration to an area of low concentration down a concentration gradient.

what is it meant by cell specification

-cell specification is the process of a stem cell becoming adapted for a particular function within the organisim.

what is a stem cell and where in the human body do you find them?

-A stem cell is an unspecifed cell

-produced in the bone marrow 

-Diffrent types of stem cell can be found around the human body.