Ooh, I was just stunned with amazement when I saw the size - it is possible, real even, that's why I don't think it's exagerated in manga. That much at least I love trees, they're admirable and some so long-lived <3 It would be probably weird, if they weren't this big, rather then the opposite...
Off the top of my head, all trees have a "max" size they can hit if humans/environmental disasters (including invasive bugs/diseases) never damage/kill them. I have zero idea if rubber trees are in this subspecies of "mega trees" (random title I'm giving them), but scientifically the thick sap is a contradiction. There is too much pressure needed to transport thick sap for a tree that big. >
Yess! Science is magic after all, and magic is science... while philosophy bonds them all~ <3 ^_^
YES! Hopefully the Dr. Stone anime sparks a big science boom throughout the world! It can do this if the story is long enough to last a few years after One Piece ends (WSJ is going to have to use Dr. Stone as their flagship series after One Piece ends). HxH is the next option now, but it has too many hiatuses.