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.
Size relative to a 6-ft (2-m) man: The California condor is the largest flying bird in North America. Their wings may stretch nearly 10 feet (3 meters) from tip to tip. When in flight, these huge birds glide on air currents to soar as high as a dizzying 15,000 feet (4,600 meters).