I think it is called a Case study.
Hopefully it is correct! :)
Answer:Red blood cells, most white blood cells, and platelets are produced in the bone marrow, the soft fatty tissue inside bone cavities. Two types of white blood cells, T and B cells (lymphocytes), are also produced in the lymph nodes and spleen, and T cells are produced and mature in the thymus gland.
Explanation:
I believe rottening would be the answer. Rotting, dead plants and animal feaces make great fertilizers.
Answer:
I would think Channel proteins but I could be wrong