GameObject prefab = Resources.Load<GameObject>("prefabs/myresourcename");
GameObject bullet = Instantiate<GameObject>(prefab, new Vector3(pos.x, pos.y, 0.0f), Quaternion.identity);
GameObject prefab = Resources.Load<GameObject>("prefabs/myresourcename");
GameObject bullet = Instantiate<GameObject>(prefab, new Vector3(pos.x, pos.y, 0.0f), Quaternion.identity);