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==Explanation== | ==Explanation== | ||
β | A {{w|shadow biosphere}} is | + | A {{w|shadow biosphere}} is a hypothetical microbial {{w|biosphere}} of Earth that uses radically different biochemical and molecular processes than currently known life. Although life on Earth is relatively well-studied, the shadow biosphere may still remain unnoticed because the exploration of the microbial world targets primarily the biochemistry of the macro-organisms. |
Because organisms based on RNA would not have ribosomes, which are usually used to detect living microorganisms, they would be difficult to find in normal circumstances. | Because organisms based on RNA would not have ribosomes, which are usually used to detect living microorganisms, they would be difficult to find in normal circumstances. | ||