Review the terms and their definitions in the mini Glossary. Write a sentence that contrasts negative and positive feedback. Terms: homeostasis, positive feedback, negative feedback

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

the answer is cell division : )