The percent of oxygen is 27. this increases the natural percent of 21 by 6 percent causing living organisms to have too much oxygen.
The atmosphere would be much more volatile.
somr people may say not much but that's a lie hospital use pure oxygen for life support you can breathe in pure oxygen for 12 years strait and not die
35 percent
Mars' atmosphere is composed of only about 0.13% oxygen, with the majority being carbon dioxide (95.3%), nitrogen (2.7%), and argon (1.6%). This low oxygen level makes it uninhabitable for humans without life support systems.
The ocean typically contains about 21% oxygen dissolved in the water. This dissolved oxygen is essential for marine life to survive and thrive. Oceanic oxygen levels can vary based on factors such as temperature, salinity, and the presence of organisms that consume oxygen.
With life support, perhaps. Mars is much colder than Earth, has much less atmospheric pressure, and very little oxygen.
20.946% by volum.
Typically, the air you breathe is comprised of 18 to 21 percent Oxygen.
Oxygen makes up about 21% of the Earth's atmosphere.
Oxygen makes up about 65% of the human body by mass.
A small percent . exhaled air always contains oxygen .
Phytoplankton are responsible for producing more oxygen on Earth than all plant life. It is estimated that they make more than 60 percent of the planet's oxygen.