The plus signs in the diagram above indicate the concentration of a particular pollutant that exists at each level of the food chain. What concept is being demonstrated by this diagram?
A) Bioaccumulation
B) 10% energy rule
C) Biomagnification
D) Food chain instability

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.