Cell division is triggered when cells reach a certain size because A. the surface area available for importing nutrients and exporting wastes is no longer sufficient. B. the large cell begins to crowd other cells. C. the surface area becomes very large and the cell is flooded with nutrients. D. the cell membrane is too inflexibl

C. the surface area becomes very large and the cell is flooded with nutrients.

they deliver oxygen to the blood

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation: