Oxygen is necessary to sustain most terrestrial life. Oxygen is used in cellular respiration and many major classes of organic molecules in living organisms contain oxygen, such as proteins, nucleic acids, carbohydrates, and fats, as do the major constituent inorganic compounds of animal shells, teeth, and bone.
From wingtip to wingtip, P. sandersi measured at least 6.4 meters. The wandering albatross, the worldâs largest living bird, has a wingspan of 3.5 meters, and the giant, extinct South American condor, Argentavis magnificens, was right around 6 meters.
exists and is an alternate of . The largest bird ever capable of flight was Argentavis magnificens, a now extinct member of the Teratornithidae group, with a wingspan of up to 8.3 m (28 ft), a length of over 3 m (10 ft) and a body weight of 80 kg (176 lb.). The largest living land bird capable of flight is the Great Bustard.