Answer:
By the process of cellular differentiation which consists of physical and functional changes of the cell used by processes at the genetic level. The expression of these in each type of cell is different. That is to say that the type of cell follows at a time of development there is differential activation of some genes and repression of others
<span>The macrophage is the cell responsible for detecting, engulfing and destroying pathogens and apoptotic cells. These cells process and present antigens (foreign materials) to immunocompetent cells and thus they are the key mediators in the development of all immune reactions.</span>
Answer:
D i believe.
Explanation:
niche= the match of a species to a specific environmental condition
A sex cell that hasn't been fertilized and has left the ovary would come out during the menstrual cycle under normal circumstances.
The grass affects the movement by helping the water not over flow / flood