Thisdefinitely depends on the school, but almost all schools do not allow snakes into the actual science fair. Although, as long as the snake, nor any other animal, is harmed, snakes may usually be used in science fair experiments.
Snake
A snake's head is approximatly 400 ft thick. At least that's what my science teacher says.
The snake is representing someone that you know in the real world.
Dunsparce, a 1st gen Land Snake Pokémon needs an Evolution. If Dunsparce is a Land Snake, then the question becomes, what does a land snake evolve into? Science of Pokémon.
They're not exactly rare. Depending on where you found it, it might be a good idea to call the animal control office or the police, since they are poisonous, and if there's one by the elementary school it should probably be dealt with.
kill them
From my own understanding, snake means someone doesnt like you.
they are poisonis when they bite someone
the rattle snake fern has 138 chromosomes
That a snake found its way in and decided to have something of a ciesta there. Or someone put it there.
We cannot identity the snake because we cannot see it and you gave no description of it or its location.
Means someone is betraying you.