Some plants respond to light with a sudden enlargement of their leaf pores. This response is important because it enables the plant to what.

it helps the plant to take in sunlight and oxygen.

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.

ya the other dude is right