There are several ways in which our planet
Earth is different from other planets.
First of all, humans can survive on Earth; we
do not know yet of other planets which can
support life. The Earth is situated just on the
right distance from the Sun to make life
possible. Being different for the rest of the
planets on our Solar System, the Earth is the
only known planet having an atmosphere rich in
Oxygen (21%), and a lot of liquid water on its
surface. The Earth has far fewer craters than
the surface of Mars, Mercury, Venus and the
Moon. This is a result of the geological
activity of the Earth over millions of years.
The time it takes for the Earth to complete
its orbit around the Sun is 365.25 days, a
year. On the other hand planets like Mercury
and Venus take less than a year to orbit the
Sun, and Pluto, which is no longer considered a
planet, takes 249 years to make one orbit around
the Sun. The Earth tilts very slightly when she
orbits the Sun, so giving us the seasons.
You will like to look at the interesting web
site where I read about the Earth and its
differences with other planets on our Solar
planets and Earth
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