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This is a false presumption. The life that exists on Earth now is dependent on oxygen, but it was not always so. Life on Earth emerged long before there was any noteworthy amount of oxygen. In fact oxygen was highly toxic to the first organisms. Oxygen began to build up in the atmosphere when cyanobacteria began carrying out photosynthesis, which uses sunlight to convert water and carbon dioxide into sugar and oxygen.
What else can I help you with?
What planets do most known extrasolar planets least resemble?
They least resemble rocky planets like Venus Earth and Mars, particularly they least resemble planets that we would consider as possible life sustaining planets.
Why doesn't other planets have oxygen?
because you need biological life. You also need liquid water. Mars does have oxygen @ very low levels. Other planets do have oxygen.
What other Planets in Our Galaxy have enough Oxygen to Sustain Human Life?
If a star system has planets, the availability of oxygen on a given planet is a complicated process. If the planet is of the correct size and in the ecosphere of the star, the production of oxygen will occur through the existence of plant life that will convert carbon dioxide into oxygen. In a primordial planet like an earth, oxygen is not going to be an element that is naturally occurring. The compound carbon dioxide is. It takes plant life to produce an atmoshpere that will sustain animal life.The odds of this happening in a given star system are low, but possible.
Why would we suffocate on the outer planets?
The outer planets does not have enough oxygen to sustain life, or they don't have an atmosphere at all.
Why do scientists look for oxygen on other planets?
Because it could be sign of life.
Why life is possible only in earth not in other planets?
Because Earth is the only place where we can murder the English language and ask questions like, "Why life is possible only in earth not in other planets?"
Oyxgen on other planets?
No, there is no oxygen on any other planet other than Earth because there is no planet life on the other planets.
What gas in your atmosphere makes life possible?
oxygen
What is evidence of possible life on planets?
there is microbial organisms or bacterial remains found
Is there more planets were people can live?
It is possible, even likely, that there are other planets that could support life. We have yet to find any.
Why is Earth the only planet with oxygen and how is that no other planet does?
Earth is the only planet with abundant oxygen in its atmosphere because it has a unique combination of factors that allow for the presence of oxygen-producing life forms, such as plants. Other planets may lack oxygen due to their distance from the sun, composition of their atmosphere, or absence of life forms that can produce oxygen through photosynthesis.
Why isn't life possible on planet venus?
there is not water and oxygen
