Helium is used to reaplce hydrogen on a n airplane because it is nonflammable
They both fly. The only difference is that a ballon has helium to make it fly but air planes use gas to make it fly.
People use model airplanes because they like airplanes or the look of them.
i think why they use airplanes toprotect them
No, microwaves are not available on airplanes for passenger use.
They both (some airplanes do) use propeller's.
helium balloons
Yes, luggage carts are not allowed on airplanes for passengers to use.
Yes, airplanes have bathrooms for passengers to use during flights.
The US Navy, as well as the navies of other nations make use of airplanes. The airplanes are often deployed from aircraft carriers. The navy does not necessarily have the same types of or capacity for airplanes as, say, the Air Force.
You can use air but it won't float so I would recommend helium. If you suck in helium, it will make your voice sound weird.... Try it!!
Airplanes use a fuel called kerosene.
we use them everyday in airplanes, cars.