All of them.
In addition to protecting us from cosmic radiation and meteors, it is the basic support of virtually all life on the planet.
No because Earth is the only planet that has life and other planets are too near and too far from the light and atmosphere has to be oxogenNone on this planet have gone out and colonized other planets. If there are any humans for any reason out amongst the stars not of our world, we have not yet met them.
we cannot as yet say for certain but it is unlikely as there is no oxygen or water
Earth is the only planet human beings live on. If there are other planets on which we can survive, they will need photosynthetic life forms to liberate significant amounts of oxygen into their atmospheres. Free oxygen readily combines with other elements--without life it is unlikely concentrations of the gas would be high enough to support human beings. Bats, maybe. Bats can survive in high CO2 atmospheres. Possibly we may engineer humans who can survive in a wider range of environmental conditions than we can now.
No person has ever been to the planet Uranus or even to the moons of the planet Uranus (which would be much easier to visit). Indeed, human beings have never been anywhere farther than the moon. Automated probes have been sent to the edge of the solar system and out into interstellar space, but human beings have not gone nearly that far.
No
Mercury.
No one knows for sure if life exists outside of the planet Earth. There are some human beings outside of the planet Earth on the International Space Station which is in orbit about 250 miles above the planet.
No there are other forms of life that share the planet with human beings.
The ability to make tools.
Because if the temperature was different human beings would not have evolved.
As far as we know, the only planet that human beings have walked on is the planet Earth; we have also walked on the moon, but that is a satellite, not a planet.
The basic need if a human being is food, shelter and clothing. These are things that he cannot survive without.
No,human beings cannot survive on this planet because it does not have any solid surface.
In addition to protecting us from cosmic radiation and meteors, it is the basic support of virtually all life on the planet.
No human beings have yet gone to the planet Mars.
because spiders have 8 legs so did humans back then