Many suspect that there was but there is no hard evidence yet.
a description of mars is 60% of mars is rocky and 40% of mars is a flat surface
Almost. It has water which mean life, but... its atmosephere is to thin so we could not breath on it.
Percival Lowell felt that the canals on Mars were indicative of the engineering efforts of an advanced civilization . We now know there were no canals; they were an optical illusion. But it is thought that Mars might have some microscopic life forms, as there is water and carbon available, the basic building blocks of life on Earth.
It is not known who vanished life on Mars. There are however proofs that there was once life on Mars.
can life exist on mars
yes there is intelligent life on mars because of the Martians on mars
There are zero chances that there is life on mars.
Gas
There is no cemetery where a burial of that description was conducted. No life on Mars has ever been detected, let along Martian life transfered to Earth.
They are trying to prove there is life but all we know there is no life on mars
There is no life on Mars (Barsoom) because there is no Ozone Layer there.
Only time will tell if there is life on Mars.