Over time, a tree that once had a total mass of 300 g increased in mass to 3000 kg. This increase in mass
comes mostly from

carbon dioxide that enters through the leaf openings

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.