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The most up to date information that I know of is that NASA says that they have not found any actual evidence of life on Mars.
I do not know what any of your textbooks might say, but the one that says there was life may be based on a 1996 announcement in which some NASA scientists showed a rock that they said had holes and stuff in it showing a colony of bacteria had lived there. But since then, that interpretation has been discredited and is not widely believed.
So, as you can see if you look at the link, current thinking is that there is no evidence of life on Mars at this point. I wonder if the text that said there was life is older and the one that says there was not is newer.
And yes it was... thats exactly what the old one had a picture of!!
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