WILD GOOSE

Wild goose flown finite rising of 5 mile ( 8 kilometre). But, around 3,1 miles ( 5 kilometre), level of closeness of lower 65% atmosphere compared to above sea level. a bird flying at this height must flap its(the wing is quicker again, which will require far more oxygens. On the contrary for animal suckles, this creature lung has been created to be used best at pasokan thin oxygen in this height.