Ecology is the study of cells and their functions.

false - it is the study of atomic bonds and matter
true
false - it is the study of dead organisms
false - it is the study of organisms and their environment

b - the respond is innate and varies over time.

good luck!

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.