Question

1) Does Air Pressure Helps The Birds To Fly?How? 2)Aeroplanes do not flap their wings like birds.How Do they lift up? 3)How Does Vaccum Cleaner work?

Answer 1

Birds and Aeroplanes fly by convention currents which are rising from the land
Vacuum cleaner work by taking in all the dust and air and it has a fan in it which moved the air out of vacuum