withiking lander was a bit detection experiments designed to test for chemical changes caused by my processesamiliar to us on earth. on earth, all living organisms interact with the environment. >> animals, for example, take oxygen from the environment and , thereby combust food obtaining energy. at the same time they release carbon but -- carbon dioxide and other waste buttocks into the environment. green plants and organisms do the reverse in a process of photosynthesis. they remove carbon dioxide from the environment and use sunlight as the energy source, converting it and releasing oxygen into the environment. >> if these experiments indicated that similar processes were occurring, then we would resume the investment in organism on the planet. our results in some experiments give us data that seemed to mimic living organisms. however, careful analysis of the data indicates that it is probably the result of a chemical rather than a >> on earth,ocess all biological systems are based on organic chemistry and it was believed that life on mars would also be based on organic compounds. the noti