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The wheels allow the plane to move around while it is on the ground.
Hopefully it lands on the rear wheels first
Airport or the landing strip.
The liquids and solids go into a holding tank and are pumped out when the plane is on the ground, usually while the plane is refueling.
Air control lands the plane. They also take the plane off, and pretty much get the plane from point A to B. As soon as they land and turn off the runway, Air control hands them off to ground control which brings them to the gate and from the gate to runway for take off again...
Taxiing
Well you pilot and airplane not drive it, when you are on the ground you taxi the plane using the rudder pedals and sometimes even a hand wheel but is not like a car. By the way the term taxi is being used as a verb which means to move a plane on wheels along the ground.
The Space Shuttle lands like a plane. When it gets to earth, there is a runway and it will land smoothly on the ground.
The plane lands by gracefully falling out of the sky.
It has four
They walk down the stairs of the plane when it lands!!
To allow the plane to land. A plane could use pontoons as well as or instead on wheels to land on water. As a general rule though, all of then have wheels, as it would be impractical to only be able to land on water.