Square12 wrote:If a tree falls in the forest and no one is around to see it, how long before it becomes firewood?
That depends on how far it is from a fire-using species (that it didn't land on), and whether it fell because of being hit by lightning. There may be a mitigating factor if the tree nymphs of the other trees are involved.
Square12 wrote:If a sapient pearwood trunk's owner hides inside it will it try and follow them into itself?
No. Rincewind proved that. Of course, you have to have permission from the trunk.
Square12 wrote:How big are the great a'tuin's bacteria?
There are no known
Square12 wrote:What does a space turtle eat and what eats it?
We are told that A'Tuin eats meteors and random asteroids if they would otherwise damage the Disc.
I suspect that nothing large eats space turtles. On the other hand, the image of a dead space turtle showed it reduced to skeletal remains, so clearly either it evaporated or something ate it. Maybe there are space-turtle bacteria after all.
Square12 wrote:Does a discworld continue to thrive after its space turtle dies?
Not according to the picture, though that was a theoretical picture of a space turtle that died because its disc died from lack of magic. However, without the protection of the turtle from space rocks and meteors, a discworld would not survive long. The water pouring endlessly over the edge would probably stop magically reappearing in the mountain streams, the sun and moon would have less impetus to circle the disc, the starving elephants would begin to stagger and fall, causing the disc's inhabitants to slide off the edge... not pretty.