Alalahanin ang mga karanasan o sitwasyon na kung saan nakaawa ka ng pasasalamat. Ilagay kung anong naidulot nito sa iyong buhay at kalusugan​

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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.

not sure if this what   you'r looking for would be percent composition

it would be heredity