Answer:
Hematopoiesis
Explanation:
Hematopoiesis is the process of blood cell formation and this occurs in the bone marrow. Hemato- is Greek, which means blood. -Poiesis is Greek, which means, creation or production. The bone marrow produces some white blood cells, all red blood cells and platelets. Its purpose is to produce blood for the living organism and replenish blood lost.
There’s no diagraaaammmmm.
The answer is D, white blood cells.
The main function of white blood cells is to defense the body from bacteria or other pathogens. There's 2 main kinds of white blood cells, lymphocytes and phagocytes. Lymphocytes mainly produce antibodies that can kill bacteria or any pathogens, and phagocytes can ingest the pathogens directly.
Therefore, since the white blood cells can protect our body, they're part of our immune system.
Evolution. Like how we evolved from apes.
I believe it is the crust
