Life on Mars is possible on the red planet. Its terrain is similar to earths; it also has weather patterns. Mars also has a presence of water. And it is proven as of July 31, 2008 by the Phoenix Mars Lander. Mars has the presence of methane. "On earth 90 percent of our atmospheric methane is produced biologically, the remaining methane is produced geochemically [interactions between water and rock]." On January 15, 2009, NASA scientist stated that areas of Mars naturally release methane. Scientists think that the methane is produced biological, and that there could be alien organisms living on Mars.
This was a short video source that contained five simple points of why life can exist on Mars. I found this a credible source because all the information that was stated was proven by a space agency in some point in time. It may not prove that life exists on Mars, but there are logical ideas and traces of life from the past that seem pretty convincing to me. If life used to exist on Mars, it can exist on Mars or anywhere else besides earth.
DiscoveryNetworks. “Top Five Cases for Martian Life.” Discovery Channel. Youtube, 16 Jan. 2009. Web. 9 April 2010.
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Good job, but you still need a quote
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