Human beings. We have no wings, so we use airplanes to fly around.
You may use airplanes or balloons (aeronautics).
Airplanes generally use gas (jet fuel) and sometimes the experimental ones use solar power. The fuel powers the engines or engine which make the plane fly. It also powers the lights and other electrical appliances on a n aircraft through the engine.
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.
Of course not.
Airplanes primarily use jet fuel as an energy source to power their engines and propel them through the air. Jet fuel is a type of fossil fuel that is specifically designed for use in aircraft engines.
Petrol
All types of land, air, and marine transports including walking and animal transport.
Fossil fuel
Fossil fuel
Depends on the type of engine.
the kind that gives boners