No animals currently exist on planet Mars as we know of considering how the conditions there are to harsh to live.
of cause it does scientists have proven it
Mars is further out from the sun than earth.
yes
Mars is a planet that is too cold for liquid water to exist on its surface. Almost the entire surface of Mars is covered in ice.
Because Mars is the closest planet to Earth
Would life exist on what planet? Earth? Mars? Yes, even if not human, trees and plant vegitation
Mainly at the poles,but also scattered throught the planet's surface
The red planet is Mars, 4th planet from the sun and 7th largest. The name of the month of March derives from the name Mars
As yet, humanity has found no signs of aliens (or any other life) on Mars, or anywhere else in the universe.
Hydrogen probably cannot exist for a long time on Mars. As you suggest this is because of the planet's fairly low gravity and escape velocity. It's easier for a very light atom or molecule, such as hydrogen, to reach the planet's escape velocity, caused by collisions in the atmosphere.
BY what it seems you mean earthquake really. But a marsquake or earthquakes on mars don't exist because the planet has no tectonic plates like earth does