The study of differences in body form is

c

explanation:

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation:

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.

idk im sorry.