The development of pollen helped plants become successful on land because pollen grains . A. allow plants to have both gametophyte and sporophyte forms B. transfer male gametes to female gametes without needing water C. enable plants to form symbiotic partnerships with deuterostomes D. make the internal distribution of water to leaves possible

the supermassive black hole is in the middle of the galaxy.

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 actual answer was 160934

d. planting trees

the trees take in carbon to make oxygen.