There are multiple lines of evidence that indicate Mars had significant amounts of liquid water on its surface at some point in its past. What has this led us to conclude about the planet? Group of answer choices Mars has had its semi-major axis increase over time, carrying it further away from the Sun Martians abandoned the planet, taking the water with them. Mars has lost a significant fraction of its atmosphere over its history A Mars day was longer in the past, allowing for longer daytime heating, but it has slowed due to tidal interactions with its satellite, Phobos Mars had a smaller eccentricity in the past, but it has grown due to a resonance with Jupiter