In
science, a
fact is a repeatable careful observation or measurement (by experimentation or other means), also called empirical evidence. While there might be all kinds of widely accepted ideas and plausible explanations about why
Cannabaceae have developed trichomes, none of these explanations are actual facts. Most likely there are multiple evolutionary (an actual
theory by the way) reasons that the plant has developed trichomes, most of which you (nor I) know absolutely anything about. So making a bunch of declarative statements only makes you look foolish.