Because water ice has been found at the Martian poles. Most of the martian ice is carbon dioxide frost, not water. We have not detected any surface water as such there yet, though it appears Mars had water eons ago.
We dont know if Mars has any type of water. But we do believe that there is a trace of water somewhere.
Scientists would like to know if there is water on mars because if it is there the planet has the possibility of sustaining life.
We all know humans need water to survive. If we find water on Mars, astronauts don't have to carry all those tons of water to the planet, and they can stay on Mars longer to do research.
There is water in the form of ice under the "top-soil" of mars and when ever it gets uncovered it evaporates fairly quickly. so there is also water vapor, what happens to that vapor I don't know. Currently we don't know if there is liquid water on mars, we haven't found any yet, and just the fact that there is water-ice on mars is really miraculous
So far as we know in 2015, Mars does not have any running water to create floods.
They found water there.
Not that we know of. The "air" pressure on Mars is so low that water cannot exist in the liquid state; it will be either a gas or a solid. We know that there is some water on Mars; at night, the water vapor condenses as frost onto solid surfaces, such as rocks or spacecraft.
According to what we know Mars has no grass on its surface but there are ice caps at the north and south poles.
So far as we know in 2015, Mars does not have any running water to create floods.
Astronauts went to mars and had a interesting theory and had some proof and took tests
No, Mars does not have trees or plants. The environment on Mars is not conducive to supporting plant life as we know it on Earth due to its thin atmosphere, extreme temperatures, and lack of liquid water on the surface.
The water is frozen. That's the only thing they know at the moment.