Has occurred when your body can no longer regulate its temperature.
a. heat exhaustion
b. heat stroke
c. hypothermia
d. none of the aboveb. heat stroke has occurred when your body can no longer regulate its temperature.

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

answer; /// i believe that the correct answer is (50%);

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.