Simple, when he is about to fall to the ground, jump, then jump on him. Repeat this.
Beat Bowser simple :)
Beat the boss as a mini person
Beat world 2
if you mean ds,beat world 2's boss as super mini mario.
go to the 5th world and beat the boss as mini Mario
Beat 7-4
Just give up! It's better
Beat bowser, and huge bowser on the last level.
beat the boss with mega mushroom
will there be a new super Mario brothers movie
beat the last level in world three
No, there is no whistle in New Super Mario Bros.