to allow breathing and expiration of those mixtures necessary for life of all denizens of that planet
No. The only planet or moon to have a breathable atmosphere is Earth.
Yes. There is one planet with oxygen in its atmosphere: our home planet Earth.
The atmosphere of Mars is very similar to that of Earth. About 100 times less dense than earth's atmosphere, but capable of weather like clouds and wind.
The gases surrounding the Earth or any astronomical body is called the atmosphere.
The gases surrounding the Earth or any astronomical body is called the atmosphere.
The planet's atmosphere (if any)
No planets like Earth of any size have been discovered. For a planet the size of the Moon to have Earth like characteristics, it would have to have a much larger iron core in order to hold on to an atmosphere.
Earth's atmosphere contains a unique abundance of free oxygen, which is not found in significant quantities on any other planet in our solar system. This oxygen is produced mainly by photosynthesis from plants, making Earth's atmosphere distinct and supporting a wide variety of life forms.
Meteors occur in the Earth's atmosphere when pieces of rock or metal from space enter and burn up due to friction. They can occur on any planet with an atmosphere, but due to Earth having a dense atmosphere, we see a higher frequency of meteors here compared to other planets.
Earth is the only planet known to have a significant amount of oxygen molecules in its atmosphere.
No. If by air you mean atmosphere, the atmosphere of Mars is actually the second smallest of all the planets. Only Mercury has less atmosphere than Mars. If by air you mean an atmosphere that we can breath, no such atmosphere has been found on another planet.
Titan has atmosphere and it's a moon. Of the planets, these have significant atmospheres : Venus, Earth, Mars, and all the "gas giants".