We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
We were just debating this in our yard, too. Our random thoughts (yours is probably a test question--tell us if you really do know!)L
--different age trees
--different topsoil for each (around where we live, gardeners bring in fifty bags from one source one year, from a cheaper other one the next) w different nutrient mix
--the cold wind hits one tree first, or more of the day
--the warm sun ditto
--exposed roots on one, not the other
--one is on a gigantic rock, the other has more soil to draw different nutrients from
--one got more rain (run-off, slope, etc.)
--God likes variety and contrast, staggers the display of His glories
I have noticed several of the trees in this neighborhood this year. They are eyecatching because one side or the other of a single tree has changed color while the opposite side of the same tree has not. Wind or water is my guess.
A tree has three of four tap roots that feed different parts of the tree. I know this as I once inadvertantly drained farm chemicals out of my pickup truck next to the neighbors tree, just on one side of the tree. Killed a third or so of this big tree in a few days, left the rest healthy. Looked kind of spooky.