Why am i black? Just curious about why im black.

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

i think it is dna, i'm not totally sure but i think it might be.

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.

the tricuspid valve is present between right atrium and right ventricle