You dont. You can get a bulbusaur and level it up, but you can't just get one in the wild. They're rare, but the pokedex doesn't say so.
You spelled VENUSAUR wrong!
:) <ubermensch00>
There is no time in FireRed.
In the power plant.
You can't see it, evolve a clefairy to get clefable.
evolve kabuto
Seafoam Islands.
yes
There's no Chimchar in this version..sorry!
Just battle with a friend that has Red, Blue, Yellow, FireRed or LeafGreen. or if you have the game, migrate from it.
you can only see the map of the area you are in
in this website: see related links
Firered and leafgreen can't catch or see any hoenn Pokemon all must be traded to you from ruby, sapphire or emerald.
Your rival will get a venusaur only if you chose squirtle as your starter i believe he will get one when he is at silph co, other than that to see or get a venusaur a friend with firered or leafgreen needs to give you one.