B. Treatment just include maintaining a lifestyle without drugs and becoming a productive member of society.
<span>a morbidity survey of the general population, like the national health interview survey</span>
The upstroke, when the wing is partially flexed also creates lift, but arrests forward movement. As a general rule the slower a bird is flying, the further it'll push it's wings forward in the down-stroke to generate extra lift and the faster a bird is flying the less it'll push it wings forward.
Well I tried to do it but it kept saying in correct answer
