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[–] Sylos 0 points 2 points (+2|-0) ago 

Earth like is a pretty broad term, actually, but that's not the point. According to https://en.wikipedia.org/wiki/Earth_analog#Mars, Mars falls under that definition of earth like. So...while it's not a lush, green, water filled world, it falls under the umbrella 'earth like' because it does have a lot of features similar to earth's.