What happens is you epic FAIL at making paper planes.
It depends. The toilet paper is recyled and made into cake wrappers and napkins.
The answer depends on a variety of variables, but the simplest is that barring further action on the pencil mark (rubbing, wear, etc), it will last as long as the paper.
If on poster paper, it's usually dry within an hour.
It does not. For an explanation of "focal plane" see the question What is the focal plane?
The infection can dissolve jaw bone.
slows the plane down
Long paper airplanes fly farther than short paper planes because they are more aerodynamic. This means they can move through the air more efficiently due to their long shape.
What kind of paper, how wet, for how long. What is your question?
A medium paper ball would launch the farthest.
Paper
Printer Paper make the best paper plane.
Depends on the paper used and how the paper plane was constructed.
The paper plane ... Leonardo da Vinci built paper planes hundreds of years ago, the first plane flew 105 yrs ago
the Paper Plane goes back to at-least to the 20'S
construction paper airplanes fly further
what can be the constant in the paper plane experiment
I'm sure you could, but then it would not be a paper plane