Does anyone know 12?? Will mark brainliest

How does a gymnosperm prevent itself from pollinating the same tree

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%