Bug and grass. (>'_'<)
Poison and Steel type moves are good against Fairy type Pokemon.
Poison is very effective against grass pokemon.
ground type Pokemon are super effective against poison type Pokemon.
Grass Pokemon are weak against Fire, Ice, psychic, Poison, Flying, and Bug type moves. The effectiveness of these types of attacks may be increased or decreased if the Pokemon has two types. For example, Bulbasaur is a dual Grass / Poison, so Poison attacks are not as effective.
ground and physic Pokemon are super effective against poison Pokemon
no
Poison types are weak against Ground and Psychic types.
Poison is doubly super effective. I think fire is also
Zubat is a Flying and Poison type pokemon so Rock types, Electric types, Ice types, and Psychic types would be great against it.
Poison is strong against grass type Pokémon.
Psycic Pokemon are weak against Ghost type, Bug type and Dark type. Psychic types are good against Fighting and Poison types since Pokemon Gold (and onward)
Psychic types are super effective against Poison types.