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It depends on how you define air. Other planets in the solar system have atmospheres, but they have different compositions from Earth's atmosphere, which may or may not be called air. The gas planets have atmospheres made mostly of hydrogen and helium while Venus and Mars have atmospheres made mostly of carbon dioxide. The air we are familiar with is mostly nitrogen and oxygen. When Earth was young it likely had a carbon dioxide atmosphere as well, but through photosynthesis algae took carbon dioxide out of the atmosphere are replaced it with oxygen. More carbon dioxide was removed in bodies of water and deposited as carbonate rocks. The nitrogen, already present in the atmosphere, remained.
Wiki User
∙ 8y ago
Wiki User
∙ 13y agoThis is still being researched by scientists.
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What is planet earth known for?
planet earth is known for being the only planet to support life
What enables the layer of air around the earth to remain around the planet?
Air is retained on Earth due to Earth's gravity.
Which is the only planet known to support life?
Yes, there is "The planet is called Goldilocks" this planet has water and the write kind of air for humans to live in but there are no hmans living on it so People can go to it in a spaceship with out an spacesuit.
The only planet with a bountiful supply of water?
Earth is the only planet with a bountiful supply of water.
Why is planet earth the Just right planet to support life?
it has air, food and water
Why earth the only planet that can support life?
Because it is the only planet that has air
Is the air on Venus good enough for people to breath on it?
No, the only planet you can breathe on is Earth ^-^
What is the richest planet on earth?
The earth is the only planet on earth.
What is the significance of planet earth?
Planet earth is the only planet that we know of that has life on it.
Is there a planet with air?
Yes earth
What planet is closest to the air?
earth
What unique about planet earth?
What is unique is that it has beings who ask questions starting, 'what is unique about . . . ?'
Why is there is life on earth and not on other planet?
Beacuse earth has water air and Sun the moon has no air or no Sun or water only earth is a life planets the other planets are the same like moon they had no air or Sun and water
What it a earth?
Earth is a are home planet ,and the only planet that contains life
Is Earth the only planet with Lava?
No, Earth is not the only planet with lava (magma), Venus has a molten core as well as Earth.
What is planet earth known for?
planet earth is known for being the only planet to support life
Is earth only planet that has nature?
No. Nature exists on and in every planet. Earth is, however, the only planet in our solar system to have life.
