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.
Confidence votes 135. The Andean Condor is the biggest bird of prey. It's wingspan is about 10 ft. long and weighs on average about 24 pounds. The Wandering Albatross has the longest wingspan, reaching up to 12 feet. And the kori bustard in Africa is the heaviest flighted bird, with some reaching up to 40-42 pounds. The largest bird alive today is a male ostrich, but they don't fly.