A structure with curved surfaces designed to give the ratio of lift to drag in flight, used as the basic form of the wings and fins of most aircraft.
Ummmm that doesn’t help us AWNSER your question
It’s a instinct, it’s what we were born to do and can’t stop doing....... it’s a state of mind where you can think while you sleep and with out dreaming sleeping would be different without it.....
It is usually an article like: a, an, the...etc.
Hope i helped!
