When cells need energy, reactions break down in the cell and capture the released energy by synthesizing

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.

b. lithosphere, asthenosphere, mesosphere   is the answer most likely