What is life? Prerequisites for a definition

Douglas E Dix1

  • 1Department of Biology, University of Biology, West Hartford, Connecticut 06117, USA. dix@mail.hartford.edu

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Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.In the 1920s, the scientists Oparin and Haldane proposed the idea that simple biological...