Self-contained and self-sustaining

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What Domain of living things is thought to have been the first form of life on Earth? Name one piece of evidence that exists for the claim that these were the earliest living things?

Imagine you are on a team designing a moon base that will be self-contained and self-sustaining. Once supplied with building materials, equipment, and organisms from Earth, the base will be expected to function indefinitely. One of the members of your team has suggested that everything sent to the base be chemically treated so that no bacteria of any kind are present. Do you think this is a good idea? Predict some of the consequences of eliminating all bacteria from an environment.

Put the following taxonomic hierarchy of classification groups in order from most general (includes the greatest number of organisms) to most specific (includes the least number of organisms): genus, family, class, phylum, kingdom, domain, species and order. Then, write the scientific names of the groups humans belong to. Cite your source of information.

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