are there any features resulting from impacts?
Yes, impact craters
Impact topography
The dichotomy of Martian topography is striking: northern plains flattened by lava flows contrast with the southern highlands, pitted and cratered by ancient impacts. Research in 2008 has presented evidence regarding a theory proposed in 1980 postulating that, four billion years ago, the northern hemisphere of Mars was struck by an object one-tenth to two-thirds the size of Earth's Moon. If validated, this would make the northern hemisphere of Mars the site of an impact crater in size, or roughly the area of Europe, Asia, and Australia combined, surpassing the South Pole–Aitken basin as the largest impact crater in the Solar System.

what is the location of mars in the solar system Mars is the fourth planet from the Sun is it known by any other names? Yes, "Red Planet" in English are there any volcanoes there? Yes, Olympus Mons who named it? Named after observations made by Mariner 9 what was that? From Nix Olympica; a volcano. Astronomers adopted the name "Olympus Mons" for the albedo feature known as Nix Olympica was that a spaceship that made the observations? It was a robotic space probe have any other space probes landed on the planet discussed above? Yes, "Mariner 4", "Viking 1", etc did the first one land on the planet or was it just a fly by? A flyby mode how did it meet its end? The gas supply in the attitude control system was exhausted, and between December 10 and 11, a total of 83 micrometeoroid hits perturbation of the spacecraft's attitude and degradation of the signal strength what is found at the polar regions of the planet? The caps at both poles consist primarily (70%) of water ice; frozen carbon dioxide layer is in northern cap and south cap has a permanent dry ice cover
The dichotomy of Martian topography is striking: northern plains flattened by lava flows contrast with the southern highlands, pitted and cratered by ancient impacts The southern highlands, pitted and cratered by ancient impacts. It is scarred by a number of impact craters: a total of 43,000 craters with a diameter of or greater have been found.
Mars Mars Mars
Impact topography Impact topography Impact topography
The dichotomy of Martian topography is striking: northern plains flattened by lava flows contrast with the southern highlands, pitted and cratered by ancient impacts The dichotomy of Martian topography is striking: northern plains flattened by lava flows contrast with the southern highlands, pitted and cratered by ancient impacts.  Mars is scarred by a number of impact craters: a total of 43,000 craters with a diameter of or greater have been found.
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Mars [SEP] Impact topography
The dichotomy of Martian topography is striking: northern plains flattened by lava flows contrast with the southern highlands, pitted and cratered by ancient impacts. Research in 2008 has presented evidence regarding a theory proposed in 1980 postulating that, four billion years ago, the northern hemisphere of Mars was struck by an object one-tenth to two-thirds the size of Earth's Moon. If validated, this would make the northern hemisphere of Mars the site of an impact crater in size, or roughly the area of Europe, Asia, and Australia combined, surpassing the South Pole–Aitken basin as the largest impact crater in the Solar System.