what planet's resources might come close with earth
liquid
Earth has an ozone layer in atmosphere. It is present in the stratospheric region. Other planets which have oxygen in their environment might have ozone.Some planets like earth do. Others might have.
Nobody knows for sure, but there is so many, that there might be more planets than people on earth!
Life which does not originate from planet Earth may very well have developed on other planets. There is really no other explanation for where it would have come from.
All of the planets help hold the Earth in the proper orbit so it is not too far away from the Sun and not too close to the Sun, either of which would make Earth inhospitable for our life forms. The larger plants also possibly attract astroids which might collide with Earth and wipe out life. The solar system is a delicate balance of gravity, rocks, planets and other material and water which allows us to live on Earth.
If by gas you mean an atmosphere, there are no planets with an atmosphere anywhere similar to Earth.
liquid
Earth has an ozone layer in atmosphere. It is present in the stratospheric region. Other planets which have oxygen in their environment might have ozone.Some planets like earth do. Others might have.
Europa and Titan have more water than is found on Earth.
the one that paul comes from
mars
Two groups into which most of the Earth's resources can be divided include natural resources and energy resources. One might also divide resources into mineral resources and energy resources.
Nobody knows for sure, but there is so many, that there might be more planets than people on earth!
Life which does not originate from planet Earth may very well have developed on other planets. There is really no other explanation for where it would have come from.
All of the planets help hold the Earth in the proper orbit so it is not too far away from the Sun and not too close to the Sun, either of which would make Earth inhospitable for our life forms. The larger plants also possibly attract astroids which might collide with Earth and wipe out life. The solar system is a delicate balance of gravity, rocks, planets and other material and water which allows us to live on Earth.
planet A better answer might be "primary". Objects other than planets can have satellites.
This is because it is highly unlikely that the exact circumstances needed to form life will occur. It happened to occur on earth, and that is why it has life. It is theoretically possible for more planets to have life on them. Adding to your answer. Earth is very lucky because it in the habitable zone which means it not too close to the sun and its not too far away. A planet has to be in the habitable to sustain liquid on its surface. They suspect there might be life(single celled) on mars because it is close to the habitable zone. Astronomers have discovered other planets that are in the habitable zone but haven't yet found other life forms.