Robert hook is the one recognized vital role of the in internal environment and observers
The answer is D.Angiogenesis
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Answer:
Erythrocytes, leukocytes and thrombocytes
Explanation:
Aplastic anemia is a type of rare condition in which the body stops producing enough new blood cells. This might occur as a result of damage to the stem cells in the bone marrow that produces these blood cells which includes the rest blood cell, the white blood cells and the platelets. The most common cause of this condition is the immune system attacking and damaging the stem cells in the bone marrow.
A system or community would be my guess
