Answer:
four blood types, a, b, ab , and o,
<span>Histamine might be released for the blood vessels. This will cause them to constrict and stop the inflammation. When an allergen is taken in by the body, this causes the system to release the histamine as a way of helping those blood vessels dilate and lower a person's blood pressure.</span>
Erythropoietin is a hormone that is released from the kidneys to stimulate the production of red blood cells.
Answer:
b
Explanation:
its an organism consisting of cells in the form of chromosomes with a distinct nucleus.
yes, and???????, you need to put more detail, that would be considered a Statement not a question.
