Those are the ailerons which make it go up or down.
All airplanes have at least two wings.
airplanes need wings so they can glide and land correctly
A paper airplane can be rolled using the surfaces used on real aircraft. Ailerons, elevons, spoilerons or differential deflection of horizontal stabilizers (which, in most semi-tailless paper airplanes is essentially the same as elevons).
Birds and airplanes both have wings.
yes.
Yes, airplanes usually have 2 wings. 1 wing would be unsteady.
Moths have special structures called "frenula" that help keep their wings folded when they are not flying. These tiny hooks on the wings attach to the body, keeping the wings in place.
2
Wings.
A termite has 4 wings. But when resting and wings are folded it may appear to be two wings.
Harry W Carlson has written: 'Estimation of leading-edge thrust for supersonic wings of arbitrary planform' -- subject(s): Supersonic planes, Airplanes, Wings, Leading edges (Aerodynamics)
The wings of an airplane are near-flat surfaces that plane the air.